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Many scientists have been warning us for years, citing a pace of extinctions far beyond the historical "background" rate. Yet critics have argued that's based on inadequate data, preserving doubt about the scope of modern wildlife declines. To see if such doubt is justified, the 2015 study compared a conservatively low estimate of current extinctions with an estimated background rate twice as high as those used in previous studies. Despite the extra caution, it still found species are disappearing up to 114 times more quickly than they normally do in between mass extinctions

six important things to know about life in the sixth mass extinction:

1. This isn't normal.

"Even under our assumptions, which would tend to minimize evidence of an incipient mass extinction, the average rate of vertebrate species loss over the last century is up to 114 times higher than the background rate," the study's authors write. "Under the 2 E/MSY background rate, the number of species that have gone extinct in the last century would have taken, depending on the vertebrate taxon, between 800 and 10,000 years to disappear.

ndicating that a sixth mass extinction is already under way."

2. Space is at a premium.

The No. 1 cause of modern wildlife declines is habitat loss and fragmentation, representing the primary threat for 85 percent of all species on the IUCN Red List. That includes deforestation for farming, logging and settlement, but also the less obvious threat of fragmentation by roads and other infrastructure.

5. No species is safe.

The number of vertebrate species that have definitely gone extinct since 1500 is at least 338,

Even under the most conservative estimates, the extinction rates for mammals, birds, amphibians and fish have all been at least 20 times their expected rates since 1900, the researchers note (the rate for reptiles ranges from 8 to 24 times above expected). Earth's entire vertebrate population has reportedly fallen 52 percent in the last 45 years alone

he threat of extinction still looms for many — including an estimated 41 percent of all amphibian species and 26 percent of mammals.

4. It's probably still worse than we think.

The 2015 study was intentionally conservative, so the actual rate of extinctions is almost certainly more extreme than it suggests

The study also focuses on vertebrates, which are typically easier to count than smaller or subtler wildlife like mollusks, insects and plants. As another recent study pointed out, this leaves much of the crisis unexamined. "Mammals and birds provide the most robust data, because the status of almost all has been assessed," the authors of that study write. "Invertebrates constitute over 99 percent of species diversity, but the status of only a tiny fraction has been assessed, thereby dramatically underestimating overall levels of extinction.

we may already have lost 7 percent of [contemporary] species on Earth

3. Vertebrates are vanishing.

"If it is allowed to continue, life would take many millions of years to recover, and our species itself would likely disappear early on," says Gerardo Ceballos of the Universidad Autónoma de México, lead author of the 2015 study. "We are sawing off the limb that we are sitting on,"

6. Unlike an asteroid, we can be reasoned with.

The discovery reinforced an idea that was emerging at the time: that there was not a single line of early humans, but multiple lineages. It was already known that three other species were living in Africa around the same time: H. habilis, H. erectus and Paranthropus boisei. H. rudolfensis added to this diversity.

Later finds from Koobi Fora suggest that the three Homo species coexisted between 1.78 and 1.98 million years ago.

H. erectus are thought to be our direct ancestors. They were the first hominins to migrate out of Africa, spreading into Europe and Asia.

but a 2013 study suggested that H. erectus had evolved the ability to throw.

This may have given H. erectus the drive they needed to become more social.There is some evidence that they shared information and worked in teams.

In the summer of 2015, researchers announced the discovery of the oldest known stone tools, dating to 3.3 million years ago. It had been assumed that only Homo species could make stone tools, but the tools were older than any known Homo fossils, suggesting that older species like A. afarensis or K. platyops could also make stone tools.

a 3.2-million-year-old fossil Australopithecus afarensis, nicknamed "Lucy". Lucy's species was immediately hailed as a key contender for our direct ancestor.

The earliest known Acheulean hand-axes were discovered near Lake Turkana in 2011. They are 1.76 million years old and were probably made by H. erectus.

sense.

Her team found fossils on the western shore of lake that demonstrated there was "diversity at the age of Lucy".

A. anamensis. This was the oldest species known from Lake Turkana, having lived about four million years ago.

another new species called Kenyanthropus platyopus, or "flat-faced man". This species lived 3.5 million years ago, when other members of Lucy's species also roamed.

"the common ancestor" of Homo, and largely killed off the idea that humans evolved on a single line.

There was a single lineage descending from apes through to Lucy, "and then out pops our immediate ancestors". To her, that did not make

There was thought to be a "substantial link between the emergence of humans (Homo) and the emergence of technology", says de la Torre, but it now seems this is not necessarily true.

Lake Turkana has played a pivotal role in our understanding of human evolution. But that is not to say the area was particularly significant for the early humans themselves.

Lake Turkana was simply an ideal place for fossils to be preserved, says Spoor. "That doesn't mean human evolution doesn't happen everywhere else in Africa."

It allows us to see multiple species that lived millions of years apart, and compare them.

until now, the planet’s natural defense systems were better at fighting them off.

Today, climate warming is demolishing those defense systems, driving a catastrophic loss in biodiversity that, when coupled with reckless deforestation and aggressive conversion of wildland for economic development, pushes farms and people closer to the wild and opens the gates for the spread of disease.

ignoring how climate and rapid land development were putting disease-carrying animals in a squeeze was akin to playing Russian roulette.

the virus is believed to have originated with the horseshoe bat, part of a genus that’s been roaming the forests of the planet for 40 million years and thrives in the remote jungles of south China, even that remains uncertain.

China for years and warning that swift climate and environmental change there — in both loss of biodiversity and encroachment by civilization — was going to help new viruses jump to people.

. Roughly 60% of new pathogens come from animals — including those pressured by diversity loss — and roughly one-third of those can be directly attributed to changes in human land use, meaning deforestation, the introduction of farming, development or resource extraction in otherwise natural settings

Vector-borne diseases — those carried by insects like mosquitoes and ticks and transferred in the blood of infected people — are also on the rise as warming weather and erratic precipitation vastly expand the geographic regions vulnerable to contagion.

Climate is even bringing old viruses back from the dead, thawing zombie contagions like the anthrax released from a frozen reindeer in 2016, which can come down from the arctic and haunt us from the past.

It is demonstrating in real time the enormous and undeniable power that nature has over civilization and even over its politics.

it also makes clear that climate policy today is indivisible from efforts to prevent new infectious outbreaks, or, as Bernstein put it, the notion that climate and health and environmental policy might not be related is “a ​dangerous delusion.”

The warming of the climate is one of the principal drivers of the greatest — and fastest — loss of species diversity in the history of the planet, as shifting climate patterns force species to change habitats, push them into new regions or threaten their food and water supplies

What’s known as biodiversity is critical because the natural variety of plants and animals lends each species greater resiliency against threat and together offers a delicately balanced safety net for natural systems

As diversity wanes, the balance is upset, and remaining species are both more vulnerable to human influences and, according to a landmark 2010 study in the journal Nature, more likely to pass along powerful pathogens.

even incremental and seemingly manageable injuries to local environments — say, the construction of a livestock farm adjacent to stressed natural forest — can add up to outsized consequences.

Coronaviruses like COVID-19 aren’t likely to be carried by insects — they don’t leave enough infected virus cells in the blood. But one in five other viruses transmitted from animals to people are vector-borne

the number of species on the planet has already dropped by 20% and that more than a million animal and plant species now face extinction.

Americans have been experiencing this phenomenon directly in recent years as migratory birds have become less diverse and the threat posed by West Nile encephalitis has spread. It turns out that the birds that host the disease happen to also be the tough ones that prevail amid a thinned population

as larger mammals suffer declines at the hands of hunters or loggers or shifting climate patterns, smaller species, including bats, rats and other rodents, are thriving, either because they are more resilient to the degraded environment or they are able to live better among people.

It is these small animals, the ones that manage to find food in garbage cans or build nests in the eaves of buildings, that are proving most adaptable to human interference and also happen to spread disease.

Warmer temperatures and higher rainfall associated with climate change — coupled with the loss of predators — are bound to make the rodent problem worse, with calamitous implications.

As much as weather changes can drive changes in species, so does altering the landscape for new farms and new cities. In fact, researchers attribute a full 30% of emerging contagion to what they call “land use change.”

As the global population surges to 10 billion over the next 35 years, and the capacity to farm food is stressed further again by the warming climate, the demand for land will only get more intense.

Already, more than one-third of the planet’s land surface, and three-quarters of all of its fresh water, go toward the cultivation of crops and raising of livestock. These are the places where infectious diseases spread most often.

The U.S. Centers for Disease Control and Prevention says that fully three-quarters of all new viruses have emerged from animals

Almost every major epidemic we know of over the past couple of decades — SARS, COVID-19, Ebola and Nipah virus — jumped to people from wildlife enduring extreme climate and habitat strain, and still, “we’re naive to them,” she said. “That puts us in a dangerous place.”

A 2008 study in the journal Nature found nearly one-third of emerging infectious diseases over the past 10 years were vector-borne, and that the jumps matched unusual changes in the climate

Ticks and mosquitoes now thrive in places they’d never ventured before. As tropical species move northward, they are bringing dangerous pathogens with them.

by 2050, disease-carrying mosquitoes will ultimately reach 500 million more people than they do today, including some 55 million more Americans.

In 2013, dengue fever — an affliction affecting nearly 400 million people a year, but normally associated with the poorest regions of Africa — was transmitted locally in New York for the first time.

“The long-term risk from dengue may be much higher than COVID,

only 15% of the planet’s forests remain intact. The rest have been cut down, degraded or fragmented to the point that they disrupt the natural ecosystems that depend on them.

it’s only a matter of time before other exotic animal-driven pathogens are driven from the forests of the global tropics to the United States or Canada or Europe because of the warming climate.

it will also shape how easily we get sick. According to a 2013 study in the journal PLOS Currents Influenza, warm winters were predictors of the most severe flu seasons in the following year

Even harsh swings from hot to cold, or sudden storms — exactly the kinds of climate-induced patterns we’re already seeing — make people more likely to get sick.

The chance of a flu epidemic in America’s most populated cities will increase by as much as 50% this century, and flu-related deaths in Europe could also jump by 50%.

Slow action on climate has made dramatic warming and large-scale environmental changes inevitable, he said, “and I think that increases in disease are going to come along with it.”

By late 2018, epidemiologists there were bracing for what they call “spillover,” or the failure to keep a virus locally contained as it jumped from the bats and villages of Yunnan into the wider world.

In late 2018, the Trump administration, as part of a sweeping effort to bring U.S. programs in China to a halt, abruptly shut down the research — and its efforts to intercept the spread of a new novel coronavirus along with it. “We got a cease and desist,” said Dennis Carroll, who founded the PREDICT program and has been instrumental in global work to address the risks from emerging viruses. By late 2019, USAID had cut the program’s global funding.

The loss is immense. The researchers believed they were on the cusp of a breakthrough, racing to sequence the genes of the coronaviruses they’d extracted from the horseshoe bat and to begin work on vaccines.

They’d campaigned for years for policymakers to fully consider what they’d learned about how land development and climate changes were driving the spread of disease, and they thought their research could literally provide governments a map to the hot spots most likely to spawn the next pandemic.

They also hoped the genetic material they’d collected could lead to a vaccine not just for one lethal variation of COVID, but perhaps — like a missile defense shield for the biosphere — to address a whole family of viruses at once

Carroll said knowledge of the virus genomes had the potential “to totally transform how we think about future biomedical interventions before there’s an emergence.

PREDICT’s staff and advisers have pushed the U.S. government to consider how welding public health policy with environmental and climate science could help stem the spread of contagions.

Since Donald Trump was elected, the group hasn’t been invited back.

What Daszak really wants — in addition to restored funding to continue his work — is the public and leaders to understand that it’s human behavior driving the rise in disease, just as it drives the climate crisis

“We turn a blind eye to the fact that our behavior is driving this,” he said. “We get cheap goods through Walmart, and then we pay for it forever through the rise in pandemics. It’s upside down.”

Both are in bad shape. The last time the group assessed African elephants, in 2008, it listed them as vulnerable. Now it says savanna elephants are endangered, one category worse.

Alfred Roca, a geneticist at the University of Illinois at Urbana-Champaign, said the I.U.C.N.’s recognition of two African elephant species was a little tardy. More than two decades ago, a study of 295 skulls in museums found “enormous differences” between the two types of elephants, he said.

Even during those few decades, the changes were drastic. The population of savanna elephants has fallen at least 60 percent, the team found. Forest elephants have declined by more than 86 percent.

Dr. Okita said that considering the two elephant species separately was helping to reveal just how bad things are, especially for the forest elephant.

The shy forest elephants have lost nearly nine-tenths of their number in a generation and are now critically endangered — just one step from extinction in the wild.

It will be especially hard for forest elephants to bounce back, Dr. Roca added, because of how long they wait to reproduce — six years longer than the savanna elephants.

As they knock down trees and chew up huge amounts of plant material, both forest and savanna elephants change their environments in ways that create new habitat for other species.

Savanna elephants are “thriving,” Dr. Okita said, in the Kavango Zambezi Transfrontier Conservation Area, which overlaps five countries in southern Africa. In some parts of Gabon and the Republic of Congo, forest elephant populations have stabilized or even grown. Where people are protecting elephants against poachers and planning land use carefully, Dr. Okita said, there has been progress

The primary resource for detailing the path of human evolution will always be fossil specimens.

In devising such scenarios and filling in the human family bush, researchers must consult a large and diverse array of fossils, and they must also employ refined excavation methods and records, geochemical dating techniques, and data from other specialized fields such as genetics, ecology and paleoecology, and ethology (animal behaviour)—in short, all the tools of the multidisciplinary science of paleoanthropology.

It is generally agreed that the taproot of the human family shrub is to be found among apelike species of the Middle Miocene Epoch (roughly 16–11.6 mya) or Late Miocene Epoch (11.6–5.3 mya). Genetic data based on molecular clock estimates support a Late Miocene ancestry. Various Eurasian and African Miocene primates have been advocated as possible ancestors to the early hominins, which came on the scene during the Pliocene Epoch (5.3–2.6 mya)

Dr. Shi’s group was fascinated by how coronaviruses jump from species to species. To find viruses, they took samples from bats and other animals, as well as from sick people living near animals carrying these viruses or associated with the wildlife trade. Much of this work was conducted in partnership with the EcoHealth Alliance, a U.S.-based scientific organization that, since 2002, has been awarded over $80 million in federal funding to research the risks of emerging infectious diseases.

Their research showed that the viruses most similar to SARS‑CoV‑2, the virus that caused the pandemic, circulate in bats that live roughly 1,000 miles away from Wuhan. Scientists from Dr. Shi’s team traveled repeatedly to Yunnan province to collect these viruses and had expanded their search to Southeast Asia. Bats in other parts of China have not been found to carry viruses that are as closely related to SARS-CoV-2.

When the Covid-19 outbreak was detected, Dr. Shi initially wondered if the novel coronavirus had come from her laboratory, saying she had never expected such an outbreak to occur in Wuhan.

The SARS‑CoV‑2 virus is exceptionally contagious and can jump from species to species like wildfire. Yet it left no known trace of infection at its source or anywhere along what would have been a thousand-mile journey before emerging in Wuhan.

The year before the outbreak, the Wuhan institute, working with U.S. partners, had proposed creating viruses with SARS‑CoV‑2’s defining feature

The laboratory pursued risky research that resulted in viruses becoming more infectious: Coronaviruses were grown from samples from infected animals and genetically reconstructed and recombined to create new viruses unknown in nature. These new viruses were passed through cells from bats, pigs, primates and humans and were used to infect civets and humanized mice (mice modified with human genes). In essence, this process forced these viruses to adapt to new host species, and the viruses with mutations that allowed them to thrive emerged as victors.

Worse still, as the pandemic raged, their American collaborators failed to publicly reveal the existence of the Defuse proposal. The president of EcoHealth, Peter Daszak, recently admitted to Congress that he doesn’t know about virus samples collected by the Wuhan institute after 2015 and never asked the lab’s scientists if they had started the work described in Defuse.

By 2019, Dr. Shi’s group had published a database describing more than 22,000 collected wildlife samples. But external access was shut off in the fall of 2019, and the database was not shared with American collaborators even after the pandemic started, when such a rich virus collection would have been most useful in tracking the origin of SARS‑CoV‑2. It remains unclear whether the Wuhan institute possessed a precursor of the pandemic virus.

In 2021, The Intercept published a leaked 2018 grant proposal for a research project named Defuse, which had been written as a collaboration between EcoHealth, the Wuhan institute and Ralph Baric at the University of North Carolina, who had been on the cutting edge of coronavirus research for years. The proposal described plans to create viruses strikingly similar to SARS‑CoV‑2.

Coronaviruses bear their name because their surface is studded with protein spikes, like a spiky crown, which they use to enter animal cells. The Defuse project proposed to search for and create SARS-like viruses carrying spikes with a unique feature: a furin cleavage site — the same feature that enhances SARS‑CoV‑2’s infectiousness in humans, making it capable of causing a pandemic. Defuse was never funded by the United States.

owever, in his testimony on Monday, Dr. Fauci explained that the Wuhan institute would not need to rely on U.S. funding to pursue research independently.

While it’s possible that the furin cleavage site could have evolved naturally (as seen in some distantly related coronaviruses), out of the hundreds of SARS-like viruses cataloged by scientists, SARS‑CoV‑2 is the only one known to possess a furin cleavage site in its spike. And the genetic data suggest that the virus had only recently gained the furin cleavage site before it started the pandemic.

Ultimately, a never-before-seen SARS-like virus with a newly introduced furin cleavage site, matching the description in the Wuhan institute’s Defuse proposal, caused an outbreak in Wuhan less than two years after the proposal was drafted.

When the Wuhan scientists published their seminal paper about Covid-19 as the pandemic roared to life in 2020, they did not mention the virus’s furin cleavage site — a feature they should have been on the lookout for, according to their own grant proposal, and a feature quickly recognized by other scientists.

At the Wuhan Institute of Virology, a team of scientists had been hunting for SARS-like viruses for over a decade, led by Shi Zhengl

In May, citing failures in EcoHealth’s monitoring of risky experiments conducted at the Wuhan lab, the Biden administration suspended all federal funding for the organization and Dr. Daszak, and initiated proceedings to bar them from receiving future grants. In his testimony on Monday, Dr. Fauci said that he supported the decision to suspend and bar EcoHealth.

Separately, Dr. Baric described the competitive dynamic between his research group and the institute when he told Congress that the Wuhan scientists would probably not have shared their most interesting newly discovered viruses with him. Documents and email correspondence between the institute and Dr. Baric are still being withheld from the public while their release is fiercely contested in litigation.

In the end, American partners very likely knew of only a fraction of the research done in Wuhan. According to U.S. intelligence sources, some of the institute’s virus research was classified or conducted with or on behalf of the Chinese military.

In the congressional hearing on Monday, Dr. Fauci repeatedly acknowledged the lack of visibility into experiments conducted at the Wuhan institute, saying, “None of us can know everything that’s going on in China, or in Wuhan, or what have you. And that’s the reason why — I say today, and I’ve said at the T.I.,” referring to his transcribed interview with the subcommittee, “I keep an open mind as to what the origin is.”

The Wuhan lab pursued this type of work under low biosafety conditions that could not have contained an airborne virus as infectious as SARS‑CoV‑2.

Labs working with live viruses generally operate at one of four biosafety levels (known in ascending order of stringency as BSL-1, 2, 3 and 4) that describe the work practices that are considered sufficiently safe depending on the characteristics of each pathogen. The Wuhan institute’s scientists worked with SARS-like viruses under inappropriately low biosafety conditions.

​​Biosafety levels are not internationally standardized, and some countries use more permissive protocols than others.

In one experiment, Dr. Shi’s group genetically engineered an unexpectedly deadly SARS-like virus (not closely related to SARS‑CoV‑2) that exhibited a 10,000-fold increase in the quantity of virus in the lungs and brains of humanized mice. Wuhan institute scientists handled these live viruses at low biosafety levels, including BSL-2.

Even the much more stringent containment at BSL-3 cannot fully prevent SARS‑CoV‑2 from escaping. Two years into the pandemic, the virus infected a scientist in a BSL-3 laboratory in Taiwan, which was, at the time, a zero-Covid country. The scientist had been vaccinated and was tested only after losing the sense of smell. By then, more than 100 close contacts had been exposed. Human error is a source of exposure even at the highest biosafety levels, and the risks are much greater for scientists working with infectious pathogens at low biosafety.

An early draft of the Defuse proposal stated that the Wuhan lab would do their virus work at BSL-2 to make it “highly cost-effective.” Dr. Baric added a note to the draft highlighting the importance of using BSL-3 to contain SARS-like viruses that could infect human cells, writing that “U.S. researchers will likely freak out.”

Years later, after SARS‑CoV‑2 had killed millions, Dr. Baric wrote to Dr. Daszak: “I have no doubt that they followed state determined rules and did the work under BSL-2. Yes China has the right to set their own policy. You believe this was appropriate containment if you want but don’t expect me to believe it. Moreover, don’t insult my intelligence by trying to feed me this load of BS.”

SARS‑CoV‑2 is a stealthy virus that transmits effectively through the air, causes a range of symptoms similar to those of other common respiratory diseases and can be spread by infected people before symptoms even appear. If the virus had escaped from a BSL-2 laboratory in 2019, the leak most likely would have gone undetected until too late.

One alarming detail — leaked to The Wall Street Journal and confirmed by current and former U.S. government officials — is that scientists on Dr. Shi’s team fell ill with Covid-like symptoms in the fall of 2019. One of the scientists had been named in the Defuse proposal as the person in charge of virus discovery work. The scientists denied having been sick.

The hypothesis that Covid-19 came from an animal at the Huanan Seafood Market in Wuhan is not supported by strong evidence.

In December 2019, Chinese investigators assumed the outbreak had started at a centrally located market frequented by thousands of visitors daily. This bias in their search for early cases meant that cases unlinked to or located far away from the market would very likely have been missed

To make things worse, the Chinese authorities blocked the reporting of early cases not linked to the market and, claiming biosafety precautions, ordered the destruction of patient samples on January 3, 2020, making it nearly impossible to see the complete picture of the earliest Covid-19 cases. Information about dozens of early cases from November and December 2019 remains inaccessible.

A pair of papers published in Science in 2022 made the best case for SARS‑CoV‑2 having emerged naturally from human-animal contact at the Wuhan market by focusing on a map of the early cases and asserting that the virus had jumped from animals into humans twice at the market in 2019

More recently, the two papers have been countered by other virologists and scientists who convincingly demonstrate that the available market evidence does not distinguish between a human superspreader event and a natural spillover at the market.

Furthermore, the existing genetic and early case data show that all known Covid-19 cases probably stem from a single introduction of SARS‑CoV‑2 into people, and the outbreak at the Wuhan market probably happened after the virus had already been circulating in humans.

Not a single infected animal has ever been confirmed at the market or in its supply chain. Without good evidence that the pandemic started at the Huanan Seafood Market, the fact that the virus emerged in Wuhan points squarely at its unique SARS-like virus laboratory.

With today’s technology, scientists can detect how respiratory viruses — including SARS, MERS and the flu — circulate in animals while making repeated attempts to jump across species. Thankfully, these variants usually fail to transmit well after crossing over to a new species and tend to die off after a small number of infections

investigators have not reported finding any animals infected with SARS‑CoV‑2 that had not been infected by humans. Yet, infected animal sources and other connective pieces of evidence were found for the earlier SARS and MERS outbreaks as quickly as within a few days, despite the less advanced viral forensic technologies of two decades ago.

Even though Wuhan is the home base of virus hunters with world-leading expertise in tracking novel SARS-like viruses, investigators have either failed to collect or report key evidence that would be expected if Covid-19 emerged from the wildlife trade. For example, investigators have not determined that the earliest known cases had exposure to intermediate host animals before falling ill.

No antibody evidence shows that animal traders in Wuhan are regularly exposed to SARS-like viruses, as would be expected in such situations.

In previous outbreaks of coronaviruses, scientists were able to demonstrate natural origin by collecting multiple pieces of evidence linking infected humans to infected animals

In contrast, virologists and other scientists agree that SARS‑CoV‑2 required little to no adaptation to spread rapidly in humans and other animals. The virus appears to have succeeded in causing a pandemic upon its only detected jump into humans.

it was a SARS-like coronavirus with a unique furin cleavage site that emerged in Wuhan, less than two years after scientists, sometimes working under inadequate biosafety conditions, proposed collecting and creating viruses of that same design.

a laboratory accident is the most parsimonious explanation of how the pandemic began.

Given what we now know, investigators should follow their strongest leads and subpoena all exchanges between the Wuhan scientists and their international partners, including unpublished research proposals, manuscripts, data and commercial orders. In particular, exchanges from 2018 and 2019 — the critical two years before the emergence of Covid-19 — are very likely to be illuminating (and require no cooperation from the Chinese government to acquire), yet they remain beyond the public’s view more than four years after the pandemic began.

it is undeniable that U.S. federal funding helped to build an unprecedented collection of SARS-like viruses at the Wuhan institute, as well as contributing to research that enhanced them.

Advocates and funders of the institute’s research, including Dr. Fauci, should cooperate with the investigation to help identify and close the loopholes that allowed such dangerous work to occur. The world must not continue to bear the intolerable risks of research with the potential to cause pandemics.

A successful investigation of the pandemic’s root cause would have the power to break a decades-long scientific impasse on pathogen research safety, determining how governments will spend billions of dollars to prevent future pandemics. A credible investigation would also deter future acts of negligence and deceit by demonstrating that it is indeed possible to be held accountable for causing a viral pandemic

Last but not least, people of all nations need to see their leaders — and especially, their scientists — heading the charge to find out what caused this world-shaking event. Restoring public trust in science and government leadership requires it.

a major extinction panic happened 100 years ago, and the similarities are unnerving.

The 1920s were also a period when the public — traumatized by a recent pandemic, a devastating world war and startling technological developments — was gripped by the conviction that humanity might soon shuffle off this mortal coil.

It also helps us see how apocalyptic fears feed off the idea that people are inherently violent, self-interested and hierarchical and that survival is a zero-sum war over resources.

Either way, it’s a cynical view that encourages us to take our demise as a foregone conclusion.

What makes an extinction panic a panic is the conviction that humanity is flawed and beyond redemption, destined to die at its own hand, the tragic hero of a terrestrial pageant for whom only one final act is possible

What the history of prior extinction panics has to teach us is that this pessimism is both politically questionable and questionably productive. Our survival will depend on our ability to recognize and reject the nihilistic appraisals of humanity that inflect our fears for the future, both left and right.

As a scholar who researches the history of Western fears about human extinction, I’m often asked how I avoid sinking into despair. My answer is always that learning about the history of extinction panics is actually liberating, even a cause for optimism

Nearly every generation has thought its generation was to be the last, and yet the human species has persisted

As a character in Jeanette Winterson’s novel “The Stone Gods” says, “History is not a suicide note — it is a record of our survival.”

Contrary to the folk wisdom that insists the years immediately after World War I were a period of good times and exuberance, dark clouds often hung over the 1920s. The dread of impending disaster — from another world war, the supposed corruption of racial purity and the prospect of automated labor — saturated the period

The previous year saw the publication of the first of several installments of what many would come to consider his finest literary achievement, “The World Crisis,” a grim retrospective of World War I that laid out, as Churchill put it, the “milestones to Armageddon.

Bluntly titled “Shall We All Commit Suicide?,” the essay offered a dismal appraisal of humanity’s prospects. “Certain somber facts emerge solid, inexorable, like the shapes of mountains from drifting mist,” Churchill wrote. “Mankind has never been in this position before. Without having improved appreciably in virtue or enjoying wiser guidance, it has got into its hands for the first time the tools by which it can unfailingly accomplish its own extermination.”

The essay — with its declaration that “the story of the human race is war” and its dismay at “the march of science unfolding ever more appalling possibilities” — is filled with right-wing pathos and holds out little hope that mankind might possess the wisdom to outrun the reaper. This fatalistic assessment was shared by many, including those well to Churchill’s left.

“Are not we and they and all the race still just as much adrift in the current of circumstances as we were before 1914?” he wondered. Wells predicted that our inability to learn from the mistakes of the Great War would “carry our race on surely and inexorably to fresh wars, to shortages, hunger, miseries and social debacles, at last either to complete extinction or to a degradation beyond our present understanding.” Humanity, the don of sci-fi correctly surmised, was rushing headlong into a “scientific war” that would “make the biggest bombs of 1918 seem like little crackers.”

The pathbreaking biologist J.B.S. Haldane, another socialist, concurred with Wells’s view of warfare’s ultimate destination. In 1925, two decades before the Trinity test birthed an atomic sun over the New Mexico desert, Haldane, who experienced bombing firsthand during World War I, mused, “If we could utilize the forces which we now know to exist inside the atom, we should have such capacities for destruction that I do not know of any agency other than divine intervention which would save humanity from complete and peremptory annihilation.”

F.C.S. Schiller, a British philosopher and eugenicist, summarized the general intellectual atmosphere of the 1920s aptly: “Our best prophets are growing very anxious about our future. They are afraid we are getting to know too much and are likely to use our knowledge to commit suicide.”

Many of the same fears that keep A.I. engineers up at night — calibrating thinking machines to human values, concern that our growing reliance on technology might sap human ingenuity and even trepidation about a robot takeover — made their debut in the early 20th century.

The popular detective novelist R. Austin Freeman’s 1921 political treatise, “Social Decay and Regeneration,” warned that our reliance on new technologies was driving our species toward degradation and even annihilation

Extinction panics are, in both the literal and the vernacular senses, reactionary, animated by the elite’s anxiety about maintaining its privilege in the midst of societal change

There is a perverse comfort to dystopian thinking. The conviction that catastrophe is baked in relieves us of the moral obligation to act. But as the extinction panic of the 1920s shows us, action is possible, and these panics can recede

To whatever extent, then, that the diagnosis proved prophetic, it’s worth asking if it might have been at least partly self-fulfilling.

today’s problems are fundamentally new. So, too, must be our solutions

It is a tired observation that those who don’t know history are destined to repeat it. We live in a peculiar moment in which this wisdom is precisely inverted. Making it to the next century may well depend on learning from and repeating the tightrope walk — between technological progress and self-annihilation — that we have been doing for the past 100 years

We have gotten into the dangerous habit of outsourcing big issues — space exploration, clean energy, A.I. and the like — to private businesses and billionaires

That ideologically varied constellation of prominent figures shared a basic diagnosis of humanity and its prospects: that our species is fundamentally vicious and selfish and our destiny therefore bends inexorably toward self-destruction.

Less than a year after Churchill’s warning about the future of modern combat — “As for poison gas and chemical warfare,” he wrote, “only the first chapter has been written of a terrible book” — the 1925 Geneva Protocol was signed, an international agreement banning the use of chemical or biological weapons in combat. Despite the many horrors of World War II, chemical weapons were not deployed on European battlefields.

As for machine-age angst, there’s a lesson to learn there, too: Our panics are often puffed up, our predictions simply wrong

In 1928, H.G. Wells published a book titled “The Way the World Is Going,” with the modest subtitle “Guesses and Forecasts of the Years Ahead.” In the opening pages, he offered a summary of his age that could just as easily have been written about our turbulent 2020s. “Human life,” he wrote, “is different from what it has ever been before, and it is rapidly becoming more different.” He continued, “Perhaps never in the whole history of life before the present time, has there been a living species subjected to so fiercely urgent, many-sided and comprehensive a process of change as ours today. None at least that has survived. Transformation or extinction have been nature’s invariable alternatives. Ours is a species in an intense phase of transition.”

Wrangham’s 2009 book, Catching Fire: How Cooking Made Us Human, pursued a very different hypothesis. Based on archaeological evidence, he made the case that our ancestors mastered fire much earlier than most of us had believed—perhaps closer to 2 million rather than 800,000 years ago—which changed everything for them

In his 1996 book, Demonic Males, co-authored with Dale Peterson, Wrangham recapped this and other evidence to draw a dire portrait of humanity (the male version) as inherently violent by evolutionary legacy. Here was vivid support for a Hobbesian view of human nature, rooted in genetics.

his two previous books, which explore the opposing poles of behavior. Renowned for his meticulous fieldwork, especially with chimps in Uganda’s Kibale National Park, Wrangham showed just how common chimp brutality is.

He also applies his evolutionary logic to studies of a wider array of animals. He dwells in particular on some marvelous experiments that explore the taming of wild foxes, minks, and other species by human-directed artificial selection over many generations.

fire extended the day into the night. Given how important we know conversations and stories told around the fire are to human hunter-gatherers, it’s easy to see how this process could have accelerated the evolution of language—an essential ingredient for less physically aggressive interactions

evidence has steadily accumulated that humans, from early on in their development, are the most cooperative species in the primate world

classic work on chimps has been complemented by new studies of bonobos, our other close relative. No more removed from us genetically than chimps are, they are a radical contrast to them, often called the “make love, not war” species. Some of our nonhuman kin, such fieldwork has revealed, can live and evolve almost without violence.

he pursues yet another ambitious hypothesis: “Reduced reactive aggression must feature alongside intelligence, cooperation, and social learning as a key contributor to the emergence and success of our species.”

“I walked around Auschwitz. I could feel the chimera at its best and worst.” Violence and virtue, he recognizes, are not opposites but powerful, not always reliable allies. “So much cooperation,” he notes of the smoothly operating human machinery of mass murder—“it can be for good or bad.”

cooking made possible a much more diverse diet

Enter the bonobos, to whom Wrangham turns as he considers how diminished aggression may have been selected for in the evolution of humans

they separated from chimps 1 to 2 million years ago, and were isolated south of a bend in the Congo River. Female bonobos form strong coalitions—partly based on sex with each other—that keep a lid on male violence. The “trust hormone” oxytocin is released during female sex: You could say that the partners are high, in both senses of the word, on trust. Because females run things, males don’t attack them, and even male-on-male violence is extremely limited. Bonobos also display the other traits common to the domestication syndrome, which suggests—as in the case of the foxes—a broad genetic dynamic at work.

He has learned that over many generations, ecological realities create species-specific behavior. In the case of bonobos, he suggests, a lush habitat in which they were protected from competition with either chimps or gorillas gave them the luxury of decreasing their own reactive aggression

Central to his argument is the idea that cooperative killing of incurably violent individuals played a central role in our self-domestication

our ancestors killed men who were guilty of repeated acts of violence. Certainly all-male raiding parties have operated in some groups of humans, seeking out and killing victims in neighboring villages

They serve as a form of capital punishment. Wrangham cites a number of examples of anthropologists witnessing a group of men collaborating to kill a violent man in their midst.

My own two years with the !Kung point to a more robust possible selection process for winnowing out aggression: female choice. Women in most hunter-gatherer groups, as I learned in the course of my experience in the field, are closer to equality with men than are women in many other societies. Evolutionary logic suggests that young women and their parents, in choosing less violent mates through the generations, could provide steady selection pressure toward lower reactive aggression—steadier pressure than infrequent dramas of capital punishment could. (

Wrangham has nonetheless highlighted a puzzle at the core of human evolution, and delivered a reminder of the double-edged nature of our virtues and vices.

Such breeding efforts, Wrangham notes, have produced “the domestication syndrome”: a change in a suite of traits, not just the low reactive aggression that breeders have deliberately singled out

Half a century and thousands of fossil finds later, we have a far more complete—and also more puzzling—view of the human past

As data pile up, so do surprises

In 1965 a remarkable book—Irven DeVore’s collection Primate Behavior (which led me to study with DeVore)—made what then seemed a radical claim: We will never understand our origins without intensive study of the wild world of our nonhuman relatives. A handful of scientists, including Jane Goodall, set up tents in distant jungles and savannas. Following monkeys, apes, and other creatures in their habitats, these scientists turned their notes and observations into voluminous, quantitative data.

The group has previously estimated that, in the Americas, nature itself—animals, plants, soil, water, all of it—is worth about twenty-four trillion dollars to us, an implausibly specific figure that makes the costs of degradation both more and less concrete.

“I think fundamentally we’ve got to get the message across that this is a crisis for humanity that could signal the end of human civilization as we know it. It’s not about animals somewhere off in the Arctic. It’s about the life that we lead, and whether we can keep leading it, and the chaos and violence that could ensue if we don’t do something immediately.”

“Even as someone who is basically an alarmist, it seemed really up in your face,” Wallace-Wells said of the group’s name and messaging. “But I also think, like, you kind of can’t argue with the results.”

Extinction Rebellion considers climate change and looming mass extinctions as intersecting but separate and potentially competing issues. In a statement last week, in response to the I.P.B.E.S. report, the group said that “too much of the focus has been on greenhouse gases and climate change. We also face an ecological crisis—the sixth mass extinction—which is as dangerous for our planet as climate change.” Jonathan Franzen said much the same, in this magazine, in 2015, describing climate change as a “usefully imponderable” problem compared to the threat of mass extinctions.

“There’s places where you’re losing habitat because temperatures are increasing, climate ranges are shifting north,

One third of the planet right now is in production of agriculture, and only about half of that is actually agriculture that has any kind of mind for the wildlife-habitat benefits that could be provided by just doing things slightly differently.”

“We’re trying to convince folks that, like, if we save nature, we save ourselves,” he continued. “If you have healthy habitats, we have healthy wildlife populations with clean water—all of that can help reduce emissions.”

Environmental groups insist that the sage grouse, just one of the countless bird species now thought to be at risk, really matters, and not only because undermining protections for it would be a boon for the fossil-fuel industries.

“It’s not just the sage grouse, right?” O’Mara said. “It’s the pronghorn. It’s the pygmy rabbit, the sagebrush vole. There’s a series of smaller species and bigger species that—if the sage grouse is healthy, that means the bigger ecosystem is doing pretty well. There’s three hundred and fifty other species that are likely doing O.K. if this one indicator species is doing O.K.”

the reality is that you have folks in both parties that deeply care about wildlife.”

We could all be doing more, but there’s maybe no greater separation between Democrats and Republicans today than on climate and pollution.”

Unlike climate change, the extinction crisis offers no clear targets to race toward or timelines to stick to. But addressing both will require, instead, a million revolutions, large and small, in the way we interact with and think about the natural world.

The number of plants that have disappeared from the wild is more than twice the number of extinct birds, mammals and amphibians combined. The new figure is also four times the number of extinct plants recorded in the International Union for Conservation of Nature’s red list.

There are thousands of “living dead” plant species, where the last survivors have no chance of reproducing because, for example, only one sex remains or the big animals needed to spread their seeds are extinct.

ew species a year. A sixth mass extinction of life on Earth is under way, according to some scientists. A landmark report in May said human society was in jeopardy from the accelerating decline of the Earth’s natural life-support systems, with 1 million species of plants and animals at risk of extinction.

mong the other plants lost are the Chile sandalwood, exploited into oblivion for its aromatic wood, and the Saint Helena olive, the last two specimens of which succumbed to a termite attack and fungal infections in 2003.

“We suffer from plant blindness. Animals are cute, important and diverse but I am absolutely shocked how a similar level of awareness and interest is missing for plants. We take them for granted and I don’t think we should.”

But to cause an extinction event on the scale of those seen millions of years ago, in which more than 75 percent of species disappeared, we would have to lose all our threatened species within a century and then keep losing species at that same super-high rate for between 240 and 540 more years. In other words, the concept assumes that we won’t save anything, ever, and that hundreds of years into the future, we will still be as inept at protecting biodiversity as we are now.

That’s just not true. As of today, according to the International Union for Conservation of Nature’s Red List, the conservation status of 128,918 species has been assessed. Of those, 902 have gone extinct since the year 1500. This is absolutely too many. One is too many.

this study actually looked at the average decline of a given population (not species) of wild animal. So severe declines in small populations disproportionately increase the average decline.

You might have also heard that we’ve lost something like 60 percent of wild animals since the 1970s? Surely this suggests that a lot more extinctions are imminent?

More recently, a new analysis of the data showed that, indeed, the 60 percent average decline was driven by very severe crashes in a very small number of vertebrate populations. For example, one small population of Australian waterfall frogs declined 99.5 percent over two years. This decline became one data point, which was averaged with 14,000 others, many from stable or increasing populations.

Really, less than 3 percent of vertebrate populations are crashing

This means that declines are not the rule everywhere. It means that the specific populations in crisis can be identified and helped. And we have the knowledge to save them, if we can marshal the will and resources.

This targeted approach works for environmental policy too. The Trump administration pushed for more than 100 rollbacks of pollution standards, land protections, and other green policies,

Jill Tauber, the vice president of litigation for climate and energy at Earthjustice, told me that her organization has more than 100 lawsuits pending against the Trump administration and that so far, once cases pass any procedural hurdles, her side is winning more than 80 percent of them

The U.S. could spend about what it already spends on energy—a mere 4 to 6 percent of gross domestic product—and still reach this goal, according to a new report out of Princeton University.

as the cost of key technologies such as solar panels and batteries has fallen, the price tag to move the country to net-zero emissions by 2050—as President Joe Biden has pledged—has also dropped

The necessary changes would have to start immediately, and they aren’t minor. Visualize a huge build-out of solar, wind, and transmission lines, for starters

What they need to be able to say clearly to politicians is: ‘I value this; this is an important priority to me.’

To make it happen, though, American citizens must “create a demand for the policy,”

On Wednesday, Biden signed an executive order on climate, which sets a goal of conserving at least 30 percent of the country by 2030, launches a Civilian Climate Corps, and hits pause on fossil-fuel development on public lands

“If we don’t keep up that demand for policy, then it is just not going to happen,”

Jenkins also rejects the idea that if we fail to keep warming under 1.5 degrees Celsius, the key target in an influential United Nations report, all is lost. “Any time you see a round number like 2.0 or 1.5 or 20 percent by 2020, that is a political number,” he said. “The reality is that every 10th of a degree matters.” There is no threshold after which it is not worth fighting.

climate change and extinction have been ongoing problems for as long as many of us can remember, feeling that they’re impossible to engage with right now is only natural.

But many of our problems are so thoroughly tangled up with one another that we may not need to fight them separately.

So fighting for racial or economic justice, or against voter suppression, still can mean fighting for the environment.

Not everything can be saved. But 2021 can be better than 2020, and 2031 can be much, much better than 2021, if we demand it.

U.S. government scientists announced that 2020 was one of the two hottest years in recorded history. The other hottest year was 2016: fittingly, the year that the United States elected Donald Trump president, a disaster for the environment as well as democratic norms

scientists sounding the alarm about high extinction rates, and in the years that followed, the idea that we are in the midst of one of the planet’s greatest mass-extinction events

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One very good reason to feel overwhelmed is that everything seems screwed up at once.  As a country, we’re facing climate change, the pandemic, racial injustice, the threat of dangerous fascist elements

Environmental destruction disproportionately harms people of color and lower-income people. And people of color are, on average, significantly more concerned about climate change than white people. A leading cause of inaction on climate change is the hoarding of power by some of the world’s wealthiest people, who profit from planetary destruction that they don’t have to deal with personally. They can simply crank up the air conditioner, pay more for the last remaining champagne and oysters, or fly to their New Zealand bunker, so they have no incentive to change unsustainable systems that they benefit from. When political power is more fairly distributed, the environment will benefit.

“Survival of fittest, which is what everyone has in mind as evolution and natural selection, has done the most harm of any folk theory that has penetrated society,”

“People think of it as strong alpha males who deserve to win. That’s not what Darwin suggested, or what has been demonstrated. The most successful strategy in life is friendliness and cooperation, and we see it again and again.”

Dogs were the population of wolves that decided to rely on humans — rather than hunting — and that population won big.

flowering plants attract animals to spread their pollen, forming a partnership that benefits both. “The plants provide food and energy, while the animals provide transportation for the pollen,” Hare says.

Chimps make war — males take charge — and can be quite violent, even killing one another. Bonobos, on the other hand, are governed by females, don’t kill one another and engage in sex to maintain a peaceful collective temperament. Bonobos also are natural sharers. They enjoy sharing food with other bonobos, and never outgrow their willingness to do so, unlike chimpanzees, who become more selfish in adulthood.

“The friendliest male bonobo is more successful than the unfriendliest chimpanzee,” Hare says, referring to reproduction. “The most successful bonobo males have more offspring than the most successful alpha male chimpanzees”

“friendliness is the winning strategy. Social problems require social solutions. The secret to our species’ success is the same as it is with dogs and bonobos.

Previous research had found that modern humans and Neanderthals shared a common ancestor that lived 600,000 years ago. Neanderthals expanded across Europe and Asia, interbred with modern humans coming out of Africa, and then became extinct about 40,000 years ago.

Human DNA also points to Africa. Living Africans have a vast amount of genetic diversity compared with other people. That’s because humans lived and evolved in Africa for thousands of generations before small groups — with comparatively small gene pools — began expanding to other continents.

Brenna Henn, a geneticist at the University of California, Davis, and her colleagues developed software to run large-scale simulations of human history. The researchers created many scenarios of different populations existing in Africa over different periods of time and then observed which ones could produce the diversity of DNA found in people alive today.

The researchers analyzed DNA from a range of African groups, including the Mende, farmers who live in Sierra Leone in West Africa; the Gumuz, a group descended from hunter-gatherers in Ethiopia; the Amhara, a group of Ethiopian farmers; and the Nama, a group of hunter-gatherers in South Africa.

The researchers compared these Africans’ DNA with the genome of a person from Britain. They also looked at the genome of a 50,000-year-old Neanderthal found in Croatia

The researchers concluded that as far back as a million years ago, the ancestors of our species existed in two distinct populations. Dr. Henn and her colleagues call them Stem1 and Stem2.

Even after these mergers 120,000 years ago, people with solely Stem1 or solely Stem2 ancestry appear to have survived

About 600,000 years ago, a small group of humans budded off from Stem1 and went on to become the Neanderthals. But Stem1 endured in Africa for hundreds of thousands of years after that, as did Stem2.

If Stem1 and Stem2 had been entirely separate from each other, they would have accumulated a large number of distinct mutations in their DNA. Instead, Dr. Henn and her colleagues found that they had remained only moderately different — about as distinct as living Europeans and West Africans are today. The scientists concluded that people had moved between Stem1 and Stem2, pairing off to have children and mixing their DNA.

it’s possible that bands of these two groups moved around a lot over the vast stretches of time during which they existed on the continent.

About 120,000 years ago, the model indicates, African history changed dramatically.

In southern Africa, people from Stem1 and Stem2 merged, giving rise to a new lineage that would lead to the Nama and other living humans in that region

Elsewhere in Africa, a separate fusion of Stem1 and Stem2 groups took place. That merger produced a lineage that would give rise to living people in West Africa and East Africa, as well as the people who expanded out of Africa.

It’s possible that climate upheavals forced Stem1 and Stem2 people into the same regions, leading them to merge into single groups.

Paleoanthropologists and geneticists have found evidence pointing to Africa as the origin of our species. The oldest fossils that may belong to modern humans, dating back as far as 300,000 years, have been unearthed there. So were the oldest stone tools used by our ancestors.

The DNA of the Mende people showed that their ancestors had interbred with Stem2 people just 25,000 years ago. “It does suggest to me that Stem2 was somewhere around West Africa,”

She and her colleagues are now adding more genomes from people in other parts of Africa to see if they affect the models.

It’s possible they will discover other populations that endured in Africa for hundreds of thousands of years, ultimately helping produce our species as we know it today.

Dr. Scerri speculated that living in a network of mingling populations across Africa might have allowed modern humans to survive while Neanderthals became extinct. In that arrangement, our ancestors could hold onto more genetic diversity, which in turn might have helped them endure shifts in the climate, or even evolve new adaptations.

“This diversity at the root of our species may have been ultimately the key to our success,”

the Skull 5 individual “provides the first evidence that early Homo comprised adult individuals with small brains but body mass, stature and limb proportions reaching the lower range limit of modern variation.”

Skeletal bones associated with the five Dmanisi skulls show that these hominids were short in stature, but that their limbs enabled them to walk long distances as fully upright bipeds. The shape of the small braincase distinguished them from the more primitive Australopithecus genus, which preceded Homo and lived for many centuries with Homo in Africa.

the story of the golden calf also reminds us that without rules we quickly become slaves to our passions—and there’s nothing freeing about that.

And the story suggests something more: unchaperoned, and left to our own untutored judgment, we are quick to aim low and worship qualities that are beneath us—in this case, an artificial animal that brings out our own animal instincts in a completely unregulated way.

Similarly, in this book Professor Peterson doesn’t just propose his twelve rules, he tells stories, too, bringing to bear his knowledge of many fields as he illustrates and explains why the best rules do not ultimately restrict us but instead facilitate our goals and make for fuller, freer lives.

Peterson wasn’t really an “eccentric”; he had sufficient conventional chops, had been a Harvard professor, was a gentleman (as cowboys can be) though he did say damn and bloody a lot, in a rural 1950s sort of way. But everyone listened, with fascination on their faces, because he was in fact addressing questions of concern to everyone at the table.

unlike many academics who take the floor and hold it, if someone challenged or corrected him he really seemed to like it. He didn’t rear up and neigh. He’d say, in a kind of folksy way, “Yeah,” and bow his head involuntarily, wag it if he had overlooked something, laughing at himself for overgeneralizing. He appreciated being shown another side of an issue, and it became clear that thinking through a problem was, for him, a dialogic process.

for an egghead Peterson was extremely practical. His examples were filled with applications to everyday life: business management, how to make furniture (he made much of his own), designing a simple house, making a room beautiful (now an internet meme) or in another, specific case related to education, creating an online writing project that kept minority students from dropping out of school by getting them to do a kind of psychoanalytic exercise on themselves,

These Westerners were different: self-made, unentitled, hands on, neighbourly and less precious than many of their big-city peers, who increasingly spend their lives indoors, manipulating symbols on computers. This cowboy psychologist seemed to care about a thought only if it might, in some way, be helpful to someone.

I was drawn to him because here was a clinician who also had given himself a great books education, and who not only loved soulful Russian novels, philosophy and ancient mythology, but who also seemed to treat them as his most treasured inheritance. But he also did illuminating statistical research on personality and temperament, and had studied neuroscience. Though trained as a behaviourist, he was powerfully drawn to psychoanalysis with its focus on dreams, archetypes, the persistence of childhood conflicts in the adult, and the role of defences and rationalization in everyday life. He was also an outlier in being the only member of the research-oriented Department of Psychology at the University of Toronto who also kept a clinical practice.

Maps of Meaning, published nearly two decades ago, shows Jordan’s wide-ranging approach to understanding how human beings and the human brain deal with the archetypal situation that arises whenever we, in our daily lives, must face something we do not understand.

The brilliance of the book is in his demonstration of how rooted this situation is in evolution, our DNA, our brains and our most ancient stories. And he shows that these stories have survived because they still provide guidance in dealing with uncertainty, and the unavoidable unknown.

this is why many of the rules in this book, being based on Maps of Meaning, have an element of universality to them.

We are ambivalent about rules, even when we know they are good for us. If we are spirited souls, if we have character, rules seem restrictive, an affront to our sense of agency and our pride in working out our own lives. Why should we be judged according to another’s rule?

And he felt he had to understand the ideologies that drove totalitarian regimes to a variant of that same behaviour: killing their own citizens.

Ideologies are simple ideas, disguised as science or philosophy, that purport to explain the complexity of the world and offer remedies that will perfect it.

Ideologues are people who pretend they know how to “make the world a better place” before they’ve taken care of their own chaos within.

Ideologies are substitutes for true knowledge, and ideologues are always dangerous when they come to power, because a simple-minded I-know-it-all approach is no match for the complexity of existence.

To understand ideology, Jordan read extensively about not only the Soviet gulag, but also the Holocaust and the rise of Nazism. I had never before met a person, born Christian and of my generation, who was so utterly tormented by what happened in Europe to the Jews, and who had worked so hard to understand how it could have occurred.

I saw what now millions have seen online: a brilliant, often dazzling public speaker who was at his best riffing like a jazz artist; at times he resembled an ardent Prairie preacher (not in evangelizing, but in his passion, in his ability to tell stories that convey the life-stakes that go with believing or disbelieving various ideas). Then he’d just as easily switch to do a breathtakingly systematic summary of a series of scientific studies. He was a master at helping students become more reflective, and take themselves and their futures seriously. He taught them to respect many of the greatest books ever written. He gave vivid examples from clinical practice, was (appropriately) self-revealing, even of his own vulnerabilities, and made fascinating links between evolution, the brain and religious stories.

Above all, he alerted his students to topics rarely discussed in university, such as the simple fact that all the ancients, from Buddha to the biblical authors, knew what every slightly worn-out adult knows, that life is suffering.

chances are, if you or someone you love is not suffering now, they will be within five years, unless you are freakishly lucky. Rearing kids is hard, work is hard, aging, sickness and death are hard, and Jordan emphasized that doing all that totally on your own, without the benefit of a loving relationship, or wisdom, or the psychological insights of the greatest psychologists, only makes it harder.

focused on triumphant heroes. In all these triumph stories, the hero has to go into the unknown, into an unexplored territory, and deal with a new great challenge and take great risks. In the process, something of himself has to die, or be given up, so he can be reborn and meet the challenge. This requires courage, something rarely discussed in a psychology class or textbook.

Jordan

views of his first YouTube statements quickly numbered in the hundreds of thousands. But people have kept listening because what he is saying meets a deep and unarticulated need. And that is because alongside our wish to be free of rules, we all search for structure.

the first generation to have been so thoroughly taught two seemingly contradictory ideas about morality, simultaneously—at their schools, colleges and universities, by many in my own generation. This contradiction has left them at times disoriented and uncertain, without guidance and, more tragically, deprived of riches they don’t even know exist.

morality and the rules associated with it are just a matter of personal opinion or happenstance, “relative to” or “related to” a particular framework, such as one’s ethnicity, one’s upbringing, or the culture or historical…

The first idea or teaching is that morality is relative, at best a…

So, the decent thing to do—once it becomes apparent how arbitrary your, and your society’s, “moral values” are—is to show tolerance for people who think differently, and…

for many people one of the worst character flaws a person can have is to be “judgmental.”* And, since we don’t know right from wrong, or what is good, just about the most inappropriate thing an adult can…

That emphasis on tolerance is so paramount that for many people one of the worst character flaws a person can have is to be “judgmental.”* And, since we don’t know right from wrong, or what is good, just about the most inappropriate thing an…

And so a generation has been raised untutored in what was once called, aptly, “practical wisdom,” which guided previous generations. Millennials, often told they have received the finest education available anywhere, have actually…

professors, chose to devalue thousands of years of human knowledge about how to acquire virtue, dismissing it as passé, “…

They were so successful at it that the very word “virtue” sounds out of date, and someone using it appears…

The study of virtue is not quite the same as the study of morals (right and wrong, good and evil). Aristotle defined the virtues simply as the ways of behaving that are most conducive to happiness in life. Vice was…

Cultivating judgment about the difference between virtue and vice is the beginning of wisdom, something…

By contrast, our modern relativism begins by asserting that making judgments about how to live is impossible, because there is no real good, and no…

Thus relativism’s closest approximation to “virtue” is “tolerance.” Only tolerance will provide social cohesion between different groups, and save us from harming each other. On Facebook and other forms of social media, therefore, you signal your so-called…

Intolerance of others’ views (no matter how ignorant or incoherent they may be) is not simply wrong; in a world where there is no right or wrong, it is worse: it is a sign you are…

But it turns out that many people cannot tolerate the vacuum—the chaos—which is inherent in life, but made worse by this moral relativism; they cannot live without a moral compass,…

So, right alongside relativism, we find the spread of nihilism and despair, and also the opposite of moral relativism: the blind certainty offered by ideologies…

Dr. Norman Doidge, MD, is the author of The Brain That Changes Itself

so we arrive at the second teaching that millennials have been bombarded with. They sign up for a humanities course, to study the greatest books ever written. But they’re not assigned the books; instead they are given…

(But the idea that we can easily separate facts and values was and remains naive; to some extent, one’s values determine what one will pay…

For the ancients, the discovery that different people have different ideas about how, practically, to live, did not paralyze them; it deepened their understanding of humanity and led to some of the most satisfying conversations human beings have ever had, about how life might be lived.

Modern moral relativism has many sources. As we in the West learned more history, we understood that different epochs had different moral codes. As we travelled the seas and explored the globe, we learned of far-flung tribes on different continents whose different moral codes made sense relative to, or within the framework of, their societies. Science played a role, too, by attacking the religious view of the world, and thus undermining the religious grounds for ethics and rules. Materialist social science implied that we could divide the world into facts (which all could observe, and were objective and “real”) and values (…

it seems that all human beings are, by some kind of biological endowment, so ineradicably concerned with morality that we create a structure of laws and rules wherever we are. The idea that human life can be free of moral concerns is a fantasy.

given that we are moral animals, what must be the effect of our simplistic modern relativism upon us? It means we are hobbling ourselves by pretending to be something we are not. It is a mask, but a strange one, for it mostly deceives the one who wears it.

Far better to integrate the best of what we are now learning with the books human beings saw fit to preserve over millennia, and with the stories that have survived, against all odds, time’s tendency to obliterate.

these really are rules. And the foremost rule is that you must take responsibility for your own life. Period.

Jordan’s message that each individual has ultimate responsibility to bear; that if one wants to live a full life, one first sets one’s own house in order; and only then can one sensibly aim to take on bigger responsibilities.

if it’s uncertain that our ideals are attainable, why do we bother reaching in the first place? Because if you don’t reach for them, it is certain you will never feel that your life has meaning.

And perhaps because, as unfamiliar and strange as it sounds, in the deepest part of our psyche, we all want to be judged.

Instead of despairing about these differences in moral codes, Aristotle argued that though specific rules, laws and customs differed from place to place, what does not differ is that in all places human beings, by their nature, have a proclivity to make rules, laws and customs.

Freud never argued (as do some who want all culture to become one huge group therapy session) that one can live one’s entire life without ever making judgments, or without morality. In fact, his point in Civilization and Its Discontents is that civilization only arises when some restraining rules and morality are in place.

Aleksandr Solzhenitsyn, the great documenter of the slave-labour-camp horrors of the latter, once wrote that the “pitiful ideology” holding that “human beings are created for happiness” was an ideology “done in by the first blow of the work assigner’s cudgel.”1 In a crisis, the inevitable suffering that life entails can rapidly make a mockery of the idea that happiness is the proper pursuit of the individual. On the radio show, I suggested, instead, that a deeper meaning was required. I noted that the nature of such meaning was constantly re-presented in the great stories of the past, and that it had more to do with developing character in the face of suffering than with happiness.

I proposed in Maps of Meaning that the great myths and religious stories of the past, particularly those derived from an earlier, oral tradition, were moral in their intent, rather than descriptive. Thus, they did not concern themselves with what the world was, as a scientist might have it, but with how a human being should act.

I suggested that our ancestors portrayed the world as a stage—a drama—instead of a place of objects. I described how I had come

to believe that the constituent elements of the world as drama were order and chaos, and not material things.

Order is where the people around you act according to well-understood social norms, and remain predictable and cooperative. It’s the world of social structure, explored territory, and familiarity. The state of Order is typically portrayed, symbolically—imaginatively—as masculine.

Chaos, by contrast, is where—or when—something unexpected happens.

As the antithesis of symbolically masculine order, it’s presented imaginatively as feminine. It’s the new and unpredictable suddenly emerging in the midst of the commonplace familiar. It’s Creation and Destruction,

Order is the white, masculine serpent; Chaos, its black, feminine counterpart. The black dot in the white—and the white in the black—indicate the possibility of transformation: just when things seem secure, the unknown can loom, unexpectedly and large. Conversely, just when everything seems lost, new order can emerge from catastrophe and chaos.

For the Taoists, meaning is to be found on the border between the ever-entwined pair. To walk that border is to stay on the path of life, the divine Way. And that’s much better than happiness.

trying to address a perplexing problem: the reason or reasons for the nuclear standoff of the Cold War. I couldn’t understand how belief systems could be so important to people that they were willing to risk the destruction of the world to protect them. I came to realize that shared belief systems made people intelligible to one another—and that the systems weren’t just about belief.

People who live by the same code are rendered mutually predictable to one another. They act in keeping with each other’s expectations and desires. They can cooperate. They can even compete peacefully, because everyone knows what to expect from everyone else.

Shared beliefs simplify the world, as well, because people who know what to expect from one another can act together to tame the world. There is perhaps nothing more important than the maintenance of this organization—this simplification. If it’s threatened, the great ship of state rocks.

It isn’t precisely that people will fight for what they believe. They will fight, instead, to maintain the match between what they believe, what they expect, and what they desire. They will fight to maintain the match between what they expect and how everyone is acting. It is precisely the maintenance of that match that enables everyone

There’s more to it, too. A shared cultural system stabilizes human interaction, but is also a system of value—a hierarchy of value, where some things are given priority and importance and others are not. In the absence of such a system of value, people simply cannot act. In fact, they can’t even perceive, because both action and perception require a goal, and a valid goal is, by necessity, something valued.

We experience much of our positive emotion in relation to goals. We are not happy, technically speaking, unless we see ourselves progressing—and the very idea of progression implies value.

Worse yet is the fact that the meaning of life without positive value is not simply neutral. Because we are vulnerable and mortal, pain and anxiety are an integral part of human existence. We must have something to set against the suffering that is intrinsic to Being.*2 We must have the meaning inherent in a profound system of value or the horror of existence rapidly becomes paramount. Then, nihilism beckons, with its hopelessness and despair.

So: no value, no meaning. Between value systems, however, there is the possibility of conflict. We are thus eternally caught between the most diamantine rock and the hardest of places:

loss of group-centred belief renders life chaotic, miserable, intolerable; presence of group-centred belief makes conflict with other groups inevitable.

In the West, we have been withdrawing from our tradition-, religion- and even nation-centred cultures, partly to decrease the danger of group conflict. But we are increasingly falling prey to the desperation of meaninglessness, and that is no improvement at all.

While writing Maps of Meaning, I was (also) driven by the realization that we can no longer afford conflict—certainly not on the scale of the world conflagrations of the twentieth century.

I came to a more complete, personal realization of what the great stories of the past continually insist upon: the centre is occupied by the individual.

It is possible to transcend slavish adherence to the group and its doctrines and, simultaneously, to avoid the pitfalls of its opposite extreme, nihilism. It is possible, instead, to find sufficient meaning in individual consciousness and experience.

How could the world be freed from the terrible dilemma of conflict, on the one hand, and psychological and social dissolution, on the other? The answer was this: through the elevation and development of the individual, and through the willingness of everyone to shoulder the burden of Being and to take the heroic path. We must each adopt as much responsibility as possible for individual life, society and the world.

We must each tell the truth and repair what is in disrepair and break down and recreate what is old and outdated. It is in this manner that we can and must reduce the suffering that poisons the world. It’s asking a lot. It’s asking for everything.

the alternative—the horror of authoritarian belief, the chaos of the collapsed state, the tragic catastrophe of the unbridled natural world, the existential angst and weakness of the purposeless

individual—is clearly worse.

a title: 12 Rules for Life: An Antidote to Chaos. Why did that one rise up above all others? First and foremost, because of its simplicity. It indicates clearly that people need ordering principles, and that chaos otherwise beckons.

We require rules, standards, values—alone and together. We’re pack animals, beasts of burden. We must bear a load, to justify our miserable existence. We require routine and tradition. That’s order. Order can become excessive, and that’s not good, but chaos can swamp us, so we drown—and that is also not good. We need to stay on the straight and narrow path.

I hope that these rules and their accompanying essays will help people understand what they already know: that the soul of the individual eternally hungers for the heroism of genuine Being, and that the willingness to take on that responsibility is identical to the decision to live a meaningful life.

RULE 1   STAND UP STRAIGHT WITH YOUR SHOULDERS BACK

Because territory matters, and because the best locales are always in short supply, territory-seeking among animals produces conflict. Conflict, in turn, produces another problem: how to win or lose without the disagreeing parties incurring too great a cost.

It’s winner-take-all in the lobster world, just as it is in human societies, where the top 1 percent have as much loot as the bottom 50 percent11—and where the richest eighty-five people have as much as the bottom three and a half billion.

This principle is sometimes known as Price’s law, after Derek J. de Solla Price,13 the researcher who discovered its application in science in 1963. It can be modelled using an approximately L-shaped graph, with number of people on the vertical axis, and productivity or resources on the horizontal.

Instead of undertaking the computationally difficult task of identifying the best man, the females outsource the problem to the machine-like calculations of the dominance hierarchy. They let the males fight it out and peel their paramours from the top.

The dominant male, with his upright and confident posture, not only gets the prime real estate and easiest access to the best hunting grounds. He also gets all the girls. It is exponentially more worthwhile to be successful, if you are a lobster, and male.

dominance hierarchies have been an essentially permanent feature of the environment to which all complex life has adapted. A third of a billion years ago, brains and nervous systems were comparatively simple. Nonetheless, they already had the structure and neurochemistry necessary to process information about status and society. The importance of this fact can hardly be overstated.