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Ellie McGinnis

The Mammoth Cometh - NYTimes.com - 2 views

  • Brand helped to establish in 1996 to support projects designed to inspire “long-term responsibility.”
  • The theme of the talk was “Is Mass Extinction of Life on Earth Inevitable?”
  • the resurrection of extinct species, like the woolly mammoth, aided by new genomic technologies developed by the Harvard molecular biologist George Church.
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  • Just as the loss of a species decreases the richness of an ecosystem, the addition of new animals could achieve the opposite effect.
  • National Geographic Society hosted a larger conference to debate the scientific and ethical questions raised by the prospect of “de-extinction.
  • “De-extinction went from concept to potential reality right before our eyes,
  • less scientific, if more persuasive, argument was advanced by the ethicist Hank Greely and the law professor Jacob Sherkow, both of Stanford. De-extinction should be pursued, they argued in a paper published in Science, because it would be really
  • “This may be the biggest attraction and possibly the biggest benefit of de-extinction. It would surely be very cool to see a living woolly mammoth.”
  • They will replace chunks of band-tailed-pigeon DNA with synthesized chunks of passenger-pigeon DNA, until the cell’s genome matches their working passenger-pigeon genome.
  • Scientists predict that changes made by human beings to the composition of the atmosphere could kill off a quarter of the planet’s mammal species, a fifth of its reptiles and a sixth of its birds by 2050
  • This cloning method, called somatic cell nuclear transfer, can be used only on species for which we have cellular material.
  • There is a shortcut. The genome of a closely related species will have a high proportion of identical DNA, so it can serve as a blueprint, or “scaffold.”
  • By comparing the fragments of passenger-pigeon DNA with the genomes of similar species, researchers can assemble an approximation of an actual passenger-pigeon genome.
  • As with any translation, there may be errors of grammar, clumsy phrases and perhaps a few missing passages, but the book will be legible. It should, at least, tell a good story.
  • the genome will have to be inscribed into a living cell.
  • “We’ve framed it in terms of conservation,”
  • MAGE (Multiplex Automated Genome Engineering). MAGE is nicknamed the “evolution machine” because it can introduce the equivalent of millions of years of genetic mutations within minutes
  • Developmental and behavioral biologists would take over, just in time to answer some difficult questions. Chicks imitate their parents’ behavior. How do you raise a passenger pigeon without parents of its own species? And how do you train band-tailed pigeons to nurture the strange spawn that emerge from their eggs; chicks that, to them, might seem monstrous: an avian Rosemary’s Baby?
  • For endangered species with tiny populations, scientists would introduce genetic diversity to offset inbreeding.
  • They will try to alter the birds’ diets, migration habits and environment. The behavior of each subsequent generation will more closely resemble that of their genetic cousins.
  • For species threatened by contagion, an effort would be made to fortify their DNA with genes that make them disease-resistant
  • The scientific term for this type of genetic intervention is “facilitated adaptation.”
  • This optimistic, soft-focus fantasy of de-extinction, while thrilling to Ben Novak, is disturbing to many conservation biologists, who consider it a threat to their entire discipline and even to the environmental movement.
  • The first question posed by conservationists addresses the logic of bringing back an animal whose native habitat has disappeared. Why go through all the trouble just to have the animal go extinct all over again?
  • There is also anxiety about disease
  • “If you recreate a species genetically and release it, and that genotype is based on a bird from a 100-year-old environment, you probably will increase risk.”
  • “There’s always this fear that somehow, if we do it, we’re going to accidentally make something horrible, because only nature can really do it right. But nature is totally random. Nature makes monsters. Nature makes threats. Many of the things that are most threatening to us are a product of nature. Revive & Restore is not going to tip the balance in any way.”
  • De-extinction also poses a rhetorical threat to conservation biologists. The specter of extinction has been the conservation movement’s most powerful argument. What if extinction begins to be seen as a temporary inconvenience?
  • De-extinction suggests that we can technofix our way out of environmental issues generally, and that’s very, very bad.
  • How will we decide which species to resurrect?
  • Philip Seddon recently published a 10-point checklist to determine the suitability of any species for revival, taking into account causes of its extinction, possible threats it might face upon resurrection and man’s ability to destroy the species “in the event of unacceptable ecological or socioeconomic impacts.”
  • But the most visceral argument against de-extinction is animal cruelty.
  • “Is it fair to do this to these animals?” Shapiro asked. “Is ‘because we feel guilty’ a good-enough reason?” Stewart Brand made a utilitarian counterargument: “We’re going to go through some suffering, because you try a lot of times, and you get ones that don’t take. On the other hand, if you can bring bucardos back, then how many would get to live that would not have gotten to live?”
  • In “How to Permit Your Mammoth,” published in The Stanford Environmental Law Journal, Norman F. Carlin asks whether revived species should be protected by the Endangered Species Act or regulated as a genetically modified organism.
  • He concludes that revived species, “as products of human ingenuity,” should be eligible for patenting.
  • The term “de-extinction” is misleading. Passenger pigeons will not rise from the grave
  • Our understanding of the passenger pigeon’s behavior derives entirely from historical accounts.
  • There is no authoritative definition of “species.” The most widely accepted definition describes a group of organisms that can procreate with one another and produce fertile offspring, but there are many exceptions.
  • Theseus’ ship, therefore, “became a standing example among the philosophers . . . one side holding that the ship remained the same, and the other contending that it was not the same.”
  • What is coming will go well beyond the resurrection of extinct species. For millenniums, we have customized our environment, our vegetables and our animals, through breeding, fertilization and pollination. Synthetic biology offers far more sophisticated tools. The creation of novel organisms, like new animals, plants and bacteria, will transform human medicine, agriculture, energy production and much else.
tongoscar

Climate change: 1 in 3 plant and animal species extinct in 50 years, study warns - CNN - 0 views

shared by tongoscar on 22 Feb 20 - No Cached
  • Take a moment to cherish your plants and appreciate the animals you see around you.In 50 years, a third of them may no longer exist.
  • approximately one in three plant, insect and animal species could face extinction by 2070. However, things could be even worse if emissions continue to rise as rapidly as they have in recent decades.
  • In a worst-case scenario, that number could rise to over 55%.
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  • Of the 538 species studied, 44% of them have already experienced an extinction in a particular local area.
  • While many species were able to tolerate a moderate increase in maximum temperatures, 50% of the species had local extinctions if maximum temperatures increased by more than 0.5 degrees Celsius. That number rose to 95% if temperatures increased by more than 2.9 degrees Celsius.
  • With January going in the record books as the warmest January in 141 years and statistical analysis done by NOAA scientists predicting 2020 to be one of the five warmest years on record, the researchers believe there will be more local extinctions across the globe.
  • The Paris Agreement was signed in 2015 by ministers from 195 countries from around the globe.It committed these countries to keep global warming below 2 degrees Celsius above pre-industrial levels and below 1.5 degrees, if possible.
  • "Based on our sample of 538 species, we projected a loss of 30% of the species under a more extreme warming scenario, but only about 16% if we stick to the Paris Agreement," Wiens told CNN. "So, think in 1 in 6 species, not 1 in 3."
  • The Paris Agreement is an international pact aimed at curbing global emissions of heat-trapping gases.Unfortunately, studies have shown that so far, many countries are failing to meet the emissions cuts they set to limit climate change.
  • "Some researchers have estimated that two-thirds of all species of plants and animals could be lost due to tropical deforestation alone," Wiens said. "If you combine that with climate change (which can impact species in protected forests and other reserves), then it really is terrible. Even from our data alone, there are extreme warming scenarios where 55% of the species would be lost from intact habitats. And note that deforestation also increases global warming. It is a double whammy against biodiversity."
knudsenlu

Hawaii: Where Evolution Can Be Surprisingly Predictable - The Atlantic - 0 views

  • Situated around 2,400 miles from the nearest continent, the Hawaiian Islands are about as remote as it’s possible for islands to be. In the last 5 million years, they’ve been repeatedly colonized by far-traveling animals, which then diversified into dozens of new species. Honeycreeper birds, fruit flies, carnivorous caterpillars ... all of these creatures reached Hawaii, and evolved into wondrous arrays of unique forms.
  • The most spectacular of these spider dynasties, Gillespie says, are the stick spiders. They’re so-named because some of them have long, distended abdomens that make them look like twigs. “You only see them at night, walking around the understory very slowly,” Gillespie says. “They’re kind of like sloths.” Murderous sloths, though: Their sluggish movements allow them to sneak up on other spiders and kill them.
  • Gillespie has shown that the gold spiders on Oahu belong to a different species from those on Kauai or Molokai. In fact, they’re more closely related to their brown and white neighbors from Oahu. Time and again, these spiders have arrived on new islands and evolved into new species—but always in one of three basic ways. A gold spider arrives on Oahu, and diversified into gold, brown, and white species. Another gold spider hops across to Maui and again diversified into gold, brown, and white species. “They repeatedly evolve the same forms,” says Gillespie.
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  • Gillespie has seen this same pattern before, among Hawaii’s long-jawed goblin spiders. Each island has its own representatives of the four basic types: green, maroon, small brown, and large brown. At first, Gillespie assumed that all the green species were related to each other. But the spiders’ DNA revealed that the ones that live on the same islands are most closely related, regardless of their colors. They too have hopped from one island to another, radiating into the same four varieties wherever they land.
  • One of the most common misunderstandings about evolution is that it is a random process. Mutations are random, yes, but those mutations then rise and fall in ways that are anything but random. That’s why stick spiders, when they invade a new island, don’t diversify into red species, or zebra-striped ones. The environment of Hawaii sculpts their bodies in a limited number of ways.
  • Gillespie adds that there’s an urgency to this work. For millions of years, islands like Hawaii have acted as crucibles of evolution, allowing living things to replay evolution’s tape in the way that Gould envisaged. But in a much shorter time span, humans have threatened the results of those natural experiments. “The Hawaiian islands are in dire trouble from invasive species, and environmental modifications,” says Gillespie. “And you have all these unknown groups of spiders—entire lineages of really beautiful, charismatic animals, most of which are undescribed.”
Javier E

One of Us - Lapham's Quarterly - 0 views

  • On what seems like a monthly basis, scientific teams announce the results of new experiments, adding to a preponderance of evidence that we’ve been underestimating animal minds, even those of us who have rated them fairly highly
  • an international group of prominent neuroscientists meeting at the University of Cambridge issued “The Cambridge Declaration on Consciousness in Non-Human Animals,” a document stating that “humans are not unique in possessing the neurological substrates that generate consciousness.” It goes further to conclude that numerous documented animal behaviors must be considered “consistent with experienced feeling states.”
  • Only with the Greeks does there enter the notion of a formal divide between our species, our animal, and every other on earth.
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  • there’s that exquisite verse, one of the most beautiful in the Bible, the one that says if God cares deeply about sparrows, don’t you think He cares about you? One is so accustomed to dwelling on the second, human, half of the equation, the comforting part, but when you put your hand over that and consider only the first, it’s a little startling: God cares deeply about the sparrows. Not just that, He cares about them individually. “Are not five sparrows sold for two pennies?” Jesus says. “Yet not one of them is forgotten in God’s sight.”
  • The modern conversation on animal consciousness proceeds, with the rest of the Enlightenment, from the mind of René Descartes, whose take on animals was vividly (and approvingly) paraphrased by the French philosopher Nicolas Malebranche: they “eat without pleasure, cry without pain, grow without knowing it; they desire nothing, fear nothing, know nothing.” Descartes’ term for them was automata
  • In On the Origin of Species, Charles Darwin made the intriguing claim that among the naturalists he knew it was consistently the case that the better a researcher got to know a certain species, the more each individual animal’s actions appeared attributable to “reason and the less to unlearnt instinct.” The more you knew, the more you suspected that they were rational. That marks an important pivot, that thought, insofar as it took place in the mind of someone devoted to extremely close and meticulous study of living animals, a mind that had trained itself not to sentimentalize.
  • The sheer number and variety of experiments carried out in the twentieth century—and with, if anything, a renewed intensity in the twenty-first—exceeds summary. Reasoning, language, neurology, the science of emotions—every chamber where “consciousness” is thought to hide has been probed. Birds and chimps and dolphins have been made to look at themselves in mirrors—to observe whether, on the basis of what they see, they groom or preen (a measure, if somewhat arbitrary, of self-awareness). Dolphins have been found to grieve. Primates have learned symbolic or sign languages and then been interrogated with them. Their answers show thinking but have proved stubbornly open to interpretation on the issue of “consciousness,” with critics warning, as always, about the dangers of anthropomorphism, animal-rights bias, etc.
  • If we put aside the self-awareness standard—and really, how arbitrary and arrogant is that, to take the attribute of consciousness we happen to possess over all creatures and set it atop the hierarchy, proclaiming it the very definition of consciousness (Georg Christoph Lichtenberg wrote something wise in his notebooks, to the effect of: only a man can draw a self-portrait, but only a man wants to)—it becomes possible to say at least the following: the overwhelming tendency of all this scientific work, of its results, has been toward more consciousness. More species having it, and species having more of it than assumed.
  • The animal kingdom is symphonic with mental activity, and of its millions of wavelengths, we’re born able to understand the minutest sliver. The least we can do is have a proper respect for our ignorance.
  • The philosopher Thomas Nagel wrote an essay in 1974 titled, “What Is It Like To Be a Bat?”, in which he put forward perhaps the least overweening, most useful definition of “animal consciousness” ever written, one that channels Spinoza’s phrase about “that nature belonging to him wherein he has his being.” Animal consciousness occurs, Nagel wrote, when “there is something that it is to be that organism—something it is like for the organism.” The strangeness of his syntax carries the genuine texture of the problem. We’ll probably never be able to step far enough outside of our species-reality to say much about what is going on with them, beyond saying how like or unlike us they are. Many things are conscious on the earth, and we are one, and our consciousness feels like this; one of the things it causes us to do is doubt the existence of the consciousness of the other millions of species. But it also allows us to imagine a time when we might stop doing that.
Javier E

Bones discovered in an island cave may be an early human species - The Washington Post - 0 views

  • Piper, Mijares and their team published a description of the foot bone in 2010. They knew it was the oldest human remain in the Philippines, dated to 67,000 years ago, based on the amount of the radioactive element uranium in the fossil
  • Mijares returned to Callao Cave and uncovered more remains in 2011 and 2015. All told, the scientists pulled a dozen fossilized parts from the cave — teeth, a thigh bone, finger bones and foot bones, representing three individuals. Attempts to extract DNA from the remains were unsuccessful.
  • The body parts are diminutive, suggesting Homo luzonensis grew no more than four feet tall. Its molars have modern shapes. The way its leg muscle attached to its thigh bone is “distinctively human,”
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  • The bones in its hands and feet are curved, “spitting images” of the toes and finger bones that belonged to the ancient Australopithecus, Piper said. These hominids, such as the 3 million-year-old Australopithecus afarensis Lucy, had digits well-suited for climbing.
  • This species lived at the same time as humans with modern anatomy, who first appeared in the fossil record 200,000 years ago (or perhaps as long as 350,000 years ago). ″We continue to realize that few thousands of years back in time, H. sapiens was definitely not alone on Earth,”
  • Though these fossils are the oldest in the Philippines, evidence for habitation is even older; 700,000 years ago, ancient butchers on Luzon carved up a rhinoceros with stone tools. Which species did the butchering is unknown.
  • A few “mammal species you find on Luzon appear to have come from the mainland,” Piper said. The Asian continent is 400 or more miles away through the Luzon strait. But in the Middle Pleistocene, when glacial sheets locked up vast amounts of water, sea levels dropped by as much as 400 feet, Piper said.
  • “I would just say that when humans could see land or they could smell it or they knew the signs, that birds were coming from it, they sought it out,” he said. “That’s not a Homo sapiens trait. It’s something our ancestors and extinct relatives had.”
  • The cartoon version of evolution, in which a hunched ape becomes a tall and jaunty biped, suggests a journey with a destination. The reality is messier,
  • An island’s confines can rapidly spark evolutionary change; Charles Darwin saw this in finches’ beaks.
  • “Isolation plays games,” Potts said. Homo floresiensis showed anthropologists that an island could be an “odd little laboratory of human evolution,” he said. These bones reinforce that lesson.
  • “It’s beginning to look like the evolutionary process is really fluid,” Potts said. “And it’s surprising that it is so fluid where each species of Homo may actually be a history or a record.” The result is a fusion of the modern and ancient: molars that could be yours alongside toes with millions-year-old curves.
  • Fifteen years ago, Hawks said, anthropologists chalked up the worldwide success of Homo sapiens to our modern anatomy. These new discoveries, in far-flung corners, suggest exceptionalism is not built into our brains or skeletons.
  • “The archaeological record is now showing us that ancient human forms were much more adaptable, and I would say clever, than we imagined,”
  • “This isn’t ‘Flowers for Algernon,’ where, suddenly, we’re super smart and everyone else in the world is behind us.” Scientists are now plumbing genomes for other clues to Homo sapiens’ survival, looking at our metabolisms or resistance to disease, he said. “I’d say the doors have opened, and we haven’t figured out where they lead.”
Javier E

Can We Improve? - The New York Times - 1 views

  • are we capable of substantial moral improvement? Could we someday be much better ethically than we are now? Is it likely that members of our species could become, on average, more generous or more honest, less self-deceptive or less self-interested?
  • I’d like to focus here on a more recent moment: 19th-century America, where the great optimism and idealism of a rapidly rising nation was tempered by a withering realism.
  • Emerson thought that “the Spirit who led us hither” would help perfect us; others have believed the agent of improvement to be evolution, or the inevitable progress of civilization. More recent advocates of our perfectibility might focus on genetic or neurological interventions, or — as in Ray Kurzweil’s “When Singularity Is Near” — information technologies.
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  • One reason that a profound moral improvement of humankind is hard to envision is that it seems difficult to pull ourselves up morally by our own bootstraps; our attempts at improvement are going to be made by the unimproved
  • People and societies occasionally improve, managing to enfranchise marginalized groups, for example, or reduce violence, but also often degenerate into war, oppression or xenophobia. It is difficult to improve and easy to convince yourself that you have improved, until the next personality crisis, the next bad decision, the next war, the next outbreak of racism, the next “crisis” in educatio
  • It’s difficult to teach your children what you yourself do not know, and it’s difficult to be good enough actually to teach your children to be good.
  • Plans for our improvement have resulted in progress here and there, but they’ve also led to many disasters of oppression, many wars and genocides.
  • One thing that Twain is saying is that many forms of evil — envy, for example, or elaborate dishonesty — appear on earth only with human beings and are found wherever we are. Creatures like us can’t see clearly what we’d be making progress toward.
  • His story “The Imp of the Perverse” shows another sort of reason that humans find it difficult to improve. The narrator asserts that a basic human impulse is to act wrongly on purpose, or even to do things because we know they’re wrong: “We act, for the reason that we should not,” the narrator declares. This is one reason that human action tends to undermine itself; our desires are contradictory.
  • Perhaps, then if we cannot improve systematically, we can improve inadvertently — or even by sheer perversity
  • As to evolution, it, too, is as likely to end in our extinction as our flourishing; it has of course extinguished most of the species to which it has given rise, and it does not clearly entail that every or any species gets better in any dimension over time
  • Our technologies may, as Kurzweil believes, allow us to transcend our finitude. On the other hand, they may end in our or even the planet’s total destruction.
  • “I have no faith in human perfectibility. I think that human exertion will have no appreciable effect on humanity. Man is … not more happy — nor more wise, than he was 6,000 years ago.”
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    are we capable of substantial moral improvement? Could we someday be much better ethically than we are now? Is it likely that members of our species could become, on average, more generous or more honest, less self-deceptive or less self-interested?
lucieperloff

Protecting Lions Helps the Whole Food Chain? Actually, We Don't Know. - The New York Times - 0 views

  • Although South Africa’s 30-plus species of smaller carnivores play important roles in their ecosystems by keeping populations of prey species in check, which in turn affects plant communities, managers give little, if any, thought to their protection.
  • scientists lack evidence about whether these predictions play out in the real world, especially in small reserves of the sort found in South Africa.
  • While the presence of lions slightly increases the number of small carnivore species living in an area, it decreases their overall range.
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  • If lions are present, they have usually been reintroduced.
  • After reintroduction, managers tend to invest significant money and effort into maintaining lion populations, i
  • They found that overall species counts were slightly higher in reserves with lions, but that, on average, lions reduced the amount of land that small carnivores are found on by roughly 30 percent.
  • “The question is, is this the natural role and a good thing for conservation, or is it a negative thing because we’re doing this in a very artificial way?”
  • More study will be required, but if smaller predators are being killed by lions or confined to certain locations where the big cats do not tread, that could lead to population declines of these species and create imbalances for other animals and plants.
  • “However, we need to take heed of the findings of this paper and direct research to ensure we have sufficient information to adapt management to a more holistic approach for the benefit of the whole ecosystem”
  • “There’s more research needed before we can say how much management and conservation priorities are aligned.”
clairemann

2 African Elephant Species Now Listed As Endangered, Monitoring Group Says | HuffPost - 1 views

  • The two species of African elephants are now both listed as endangered, thanks to a one-two punch of poaching and habitat loss, according to a new assessment.
  • “The forest elephants, in most cases, have been largely ignored,” Ben Okita, a conservation biologist, told The New York Times. “It’s become clear that genetically these two species are different.”
  • The main threats to the elephants remain poaching for their ivory, and habitat loss.
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  • Savannah elephants have declined by at least 60% over the last half-century.
  • “Africa’s elephants play key roles in ecosystems, economies and in our collective imagination all over the world,”
  • The report did include some good news. Anti-poaching programs in some regions of Gabon and the Republic of the Congo have helped forest elephant numbers stabilize.
anniina03

This Strange Microbe May Mark One of Life's Great Leaps - The New York Times - 0 views

  • A bizarre tentacled microbe discovered on the floor of the Pacific Ocean may help explain the origins of complex life on this planet and solve one of the deepest mysteries in biology, scientists reported on Wednesday.Two billion years ago, simple cells gave rise to far more complex cells. Biologists have struggled for decades to learn how it happened.
  • The new species, called Prometheoarchaeum, turns out to be just such a transitional form, helping to explain the origins of all animals, plants, fungi — and, of course, humans. The research was reported in the journal Nature.
  • Species that share these complex cells are known as eukaryotes, and they all descend from a common ancestor that lived an estimated two billion years ago.Before then, the world was home only to bacteria and a group of small, simple organisms called archaea. Bacteria and archaea have no nuclei, lysosomes, mitochondria or skeletons
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  • In the late 1900s, researchers discovered that mitochondria were free-living bacteria at some point in the past. Somehow they were drawn inside another cell, providing new fuel for their host. In 2015, Thijs Ettema of Uppsala University in Sweden and his colleagues discovered fragments of DNA in sediments retrieved from the Arctic Ocean. The fragments contained genes from a species of archaea that seemed to be closely related to eukaryotes.Dr. Ettema and his colleagues named them Asgard archaea. (Asgard is the home of the Norse gods.) DNA from these mystery microbes turned up in a river in North Carolina, hot springs in New Zealand and other places around the world.
  • Masaru K. Nobu, a microbiologist at the National Institute of Advanced Industrial Science and Technology in Tsukuba, Japan, and his colleagues managed to grow these organisms in a lab. The effort took more than a decade.The microbes, which are adapted to life in the cold seafloor, have a slow-motion existence. Prometheoarchaeum can take as long as 25 days to divide. By contrast, E. coli divides once every 20 minutes.
  • In the lab, the researchers mimicked the conditions in the seafloor by putting the sediment in a chamber without any oxygen. They pumped in methane and extracted deadly waste gases that might kill the resident microbes.The mud contained many kinds of microbes. But by 2015, the researchers had isolated an intriguing new species of archaea. And when Dr. Ettema and colleagues announced the discovery of Asgard archaea DNA, the Japanese researchers were shocked. Their new, living microbe belonged to that group.The researchers then undertook more painstaking research to understand the new species and link it to the evolution of eukaryotes.The researchers named the microbe Prometheoarchaeum syntrophicum, in honor of Prometheus, the Greek god who gave humans fire — after fashioning them from clay.
  • This finding suggests that the proteins that eukaryotes used to build complex cells started out doing other things, and only later were assigned new jobs.Dr. Nobu and his colleagues are now trying to figure out what those original jobs were. It’s possible, he said, that Prometheoarchaeum creates its tentacles with genes later used by eukaryotes to build cellular skeletons.
  • Before the discovery of Prometheoarchaeum, some researchers suspected that the ancestors of eukaryotes lived as predators, swallowing up smaller microbes. They might have engulfed the first mitochondria this way.
  • Instead of hunting prey, Prometheoarchaeum seems to make its living by slurping up fragments of proteins floating by. Its partners feed on its waste. They, in turn, provide Prometheoarchaeum with vitamins and other essential compounds.
sanderk

What We Learned in Science News in 2019 - The New York Times - 0 views

  • You probably know the broad outline of the story: 66 million years ago, a giant meteorite landed in what is now the Gulf of Mexico, and ended the dinosaurs. This year, various teams of scientists, working independently, helped fill in the picture of exactly what happened on that fateful day.
  • An exhaustive analysis of hundreds of bird species in the United States and Canada contained a warning: The majority of bird species are in decline, many by huge numbers. The likely culprits? Habitat loss and pesticides
  • Quantum computing had a big year. Google claimed to have reached a long-sought breakthrough called “quantum supremacy,” allowing computers to perform calculations at inconceivable speeds.
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  • Clive Wynne, a psychologist specializing in dog behavior, contends that what makes your furry friend special is not its intellect but its ability to bond with you. And not just with you. The dog’s ability to bond across species — with sheep, goats, even (horrors!) cats
  • Thirteen species of salmon and steelhead trout are considered threatened or endangered in the Northwest’s Columbia basin region
  • The fish are a keystone food source for other species, and an endangered population of orcas may be starving for lack of enough wild salmon to eat. Many scientists favor removing dams on some rivers to save the orcas and the fish. But the idea faces resistance from government agencies that manage the rivers.
  • A video of salmon traveling through a long tube went viral in 2019. You probably watched it. But the Whooshh cannon — its actual name — is a serious tool that conservationists are testing not only to help fish migrate, but to contain invasive carp that foul North American waterways.
  • A New and Improved Table could come in handy: As more superheavy elements are discovered, their behaviors could challenge the integrity of Mendeleev’s memorable chart.
Javier E

Opinion | Richard Powers on What We Can Learn From Trees - The New York Times - 0 views

  • Theo and Robin have a nightly ritual where they say a prayer that Alyssa, the deceased wife and mother, taught them: May all sentient beings be free from needless suffering. That prayer itself comes from the four immeasurables in the Buddhist tradition.
  • When we enter into or recover this sense of kinship that was absolutely fundamental to so many indigenous cultures everywhere around the world at many, many different points in history, that there is no radical break between us and our kin, that even consciousness is shared, to some degree and to a large degree, with a lot of other creatures, then death stops seeming like the enemy and it starts seeming like one of the most ingenious kinds of design for keeping evolution circulating and keeping the experiment running and recombining.
  • Look, I’m 64 years old. I can remember sitting in psychology class as an undergraduate and having my professor declare that no, of course animals don’t have emotions because they don’t have an internal life. They don’t have conscious awareness. And so what looks to you like your dog being extremely happy or being extremely guilty, which dogs do so beautifully, is just your projection, your anthropomorphizing of those other creatures. And this prohibition against anthropomorphism created an artificial gulf between even those animals that are ridiculously near of kin to us, genetically.
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  • I don’t know if that sounds too complicated. But the point is, it’s not just giving up domination. It’s giving up this sense of separateness in favor of a sense of kinship. And those people who do often wonder how they failed to see how much continuity there is in the more-than-human world with the human world.
  • to go from terror into being and into that sense that the experiment is sacred, not this one outcome of the experiment, is to immediately transform the way that you think even about very fundamental social and economic and cultural things. If the experiment is sacred, how can we possibly justify our food systems, for instance?
  • when I first went to the Smokies and hiked up into the old growth in the Southern Appalachians, it was like somebody threw a switch. There was some odd filter that had just been removed, and the world sounded different and smelled different.
  • richard powersYeah. In human exceptionalism, we may be completely aware of evolutionary continuity. We may understand that we have a literal kinship with the rest of creation, that all life on Earth employs the same genetic code, that there is a very small core of core genes and core proteins that is shared across all the kingdoms and phyla of life. But conceptually, we still have this demented idea that somehow consciousness creates a sanctity and a separation that almost nullifies the continuous elements of evolution and biology that we’ve come to understand.
  • if we want to begin this process of rehabilitation and transformation of consciousness that we are going to need in order to become part of the living Earth, it is going to be other kinds of minds that give us that clarity and strength and diversity and alternative way of thinking that could free us from this stranglehold of thought that looks only to the maximizing return on investment in very leverageable ways.
  • richard powersIt amazed me to get to the end of the first draft of “Bewilderment” and to realize how much Buddhism was in the book, from the simplest things.
  • I think there is nothing more science inflected than being out in the living world and the more-than-human world and trying to understand what’s happening.
  • And of course, we can combine this with what we were talking about earlier with death. If we see all of evolution as somehow leading up to us, all of human, cultural evolution leading up to neoliberalism and here we are just busily trying to accumulate and make meaning for ourselves, death becomes the enemy.
  • And you’re making the point in different ways throughout the book that it is the minds we think of as unusual, that we would diagnose as having some kind of problem or dysfunction that are, in some cases, are the only ones responding to the moment in the most common sense way it deserves. It is almost everybody else’s brain that has been broken.
  • it isn’t surprising. If you think of the characteristics of this dominant culture that we’ve been talking about — the fixation on control, the fixation on mastery, the fixation on management and accumulation and the resistance of decay — it isn’t surprising that that culture is also threatened by difference and divergence. It seeks out old, stable hierarchies — clear hierarchies — of control, and anything that’s not quite exploitable or leverageable in the way that the normal is terrifying and threatening.
  • And the more I looked for it, the more it pervaded the book.
  • ezra kleinI’ve heard you say that it has changed the way you measure a good day. Can you tell me about that?richard powersThat’s true.I suppose when I was still enthralled to commodity-mediated individualist market-driven human exceptionalism — we need a single word for this
  • And since moving to the Smokies and since publishing “The Overstory,” my days have been entirely inverted. I wake up, I go to the window, and I look outside. Or I step out onto the deck — if I haven’t been sleeping on the deck, which I try to do as much as I can in the course of the year — and see what’s in the air, gauge the temperature and the humidity and the wind and see what season it is and ask myself, you know, what’s happening out there now at 1,700 feet or 4,000 feet or 5,000 feet.
  • let me talk specifically about the work of a scientist who has herself just recently published a book. It’s Dr. Suzanne Simard, and the book is “Finding the Mother Tree.” Simard has been instrumental in a revolution in our way of thinking about what’s happening underground at the root level in a forest.
  • it was a moving moment for me, as an easterner, to stand up there and to say, this is what an eastern forest looks like. This is what a healthy, fully-functioning forest looks like. And I’m 56 years old, and I’d never seen it.
  • the other topics of that culture tend to circle back around these sorts of trends, human fascinations, ways of magnifying our throw weight and our ability and removing the last constraints to our desires and, in particular, to eliminate the single greatest enemy of meaning in the culture of the technological sublime that is, itself, such a strong instance of the culture of human separatism and commodity-mediated individualist capitalism— that is to say, the removal of death.
  • Why is it that we have known about the crisis of species extinction for at least half a century and longer? And I mean the lay public, not just scientists. But why has this been general knowledge for a long time without public will demanding some kind of action or change
  • And when you make kinship beyond yourself, your sense of meaning gravitates outwards into that reciprocal relationship, into that interdependence. And you know, it’s a little bit like scales falling off your eyes. When you do turn that corner, all of the sources of anxiety that are so present and so deeply internalized become much more identifiable. And my own sense of hope and fear gets a much larger frame of reference to operate in.
  • I think, for most of my life, until I did kind of wake up to forests and to trees, I shared — without really understanding this as a kind of concession or a kind of subscription — I did share this cultural consensus that meaning is a private thing that we do for ourselves and by ourselves and that our kind of general sense of the discoveries of the 19th and 20th century have left us feeling a bit unsponsored and adrift beyond the accident of human existence.
  • The largest single influence on any human being’s mode of thought is other human beings. So if you are surrounded by lots of terrified but wishful-thinking people who want to believe that somehow the cavalry is going to come at the last minute and that we don’t really have to look inwards and change our belief in where meaning comes from, that we will somehow be able to get over the finish line with all our stuff and that we’ll avert this disaster, as we have other kinds of disasters in the past.
  • I think what was happening to me at that time, as I was turning outward and starting to take the non-human world seriously, is my sense of meaning was shifting from something that was entirely about me and authored by me outward into this more collaborative, reciprocal, interdependent, exterior place that involved not just me but all of these other ways of being that I could make kinship with.
  • And I think I was right along with that sense that somehow we are a thing apart. We can make purpose and make meaning completely arbitrarily. It consists mostly of trying to be more in yourself, of accumulating in one form or another.
  • I can’t really be out for more than two or three miles before my head just fills with associations and ideas and scenes and character sketches. And I usually have to rush back home to keep it all in my head long enough to get it down on paper.
  • for my journey, the way to characterize this transition is from being fascinated with technologies of mastery and control and what they’re doing to us as human beings, how they’re changing what the capacities and affordances of humanity are and how we narrate ourselves, to being fascinated with technologies and sciences of interdependence and cooperation, of those sciences that increase our sense of kinship and being one of many, many neighbors.
  • And that’s an almost impossible persuasion to rouse yourself from if you don’t have allies. And I think the one hopeful thing about the present is the number of people trying to challenge that consensual understanding and break away into a new way of looking at human standing is growing.
  • And when you do subscribe to a culture like that and you are confronted with the reality of your own mortality, as I was when I was living in Stanford, that sense of stockpiling personal meaning starts to feel a little bit pointless.
  • And I just head out. I head out based on what the day has to offer. And to have that come first has really changed not only how I write, but what I’ve been writing. And I think it really shows in “Bewilderment.” It’s a totally different kind of book from my previous 12.
  • the marvelous thing about the work, which continues to get more sophisticated and continues to turn up newer and newer astonishments, is that there was odd kind of reciprocal interdependence and cooperation across the species barrier, that Douglas firs and birches were actually involved in these sharing back and forth of essential nutrients. And that’s a whole new way of looking at forest.
  • she began to see that the forests were actually wired up in very complex and identifiable ways and that there was an enormous system of resource sharing going on underground, that trees were sharing not only sugars and the hydrocarbons necessary for survival, but also secondary metabolites. And these were being passed back and forth, both symbiotically between the trees and the fungi, but also across the network to other trees so that there were actually trees in wired up, fungally-connected forests where large, dominant, healthy trees were subsidizing, as it were, trees that were injured or not in favorable positions or damaged in some way or just failing to thrive.
  • so when I was still pretty much a card-carrying member of that culture, I had this sense that to become a better person and to get ahead and to really make more of myself, I had to be as productive as possible. And that meant waking up every morning and getting 1,000 words that I was proud of. And it’s interesting that I would even settle on a quantitative target. That’s very typical for that kind of mindset that I’m talking about — 1,000 words and then you’re free, and then you can do what you want with the day.
  • there will be a threshold, as there have been for these other great social transformations that we’ve witnessed in the last couple of decades where somehow it goes from an outsider position to absolutely mainstream and common sense.
  • I am persuaded by those scholars who have showed the degree to which the concept of nature is itself an artificial construction that’s born of cultures of human separatism. I believe that everything that life does is part of the living enterprise, and that includes the construction of cities. And there is no question at all the warning that you just gave about nostalgia creating a false binary between the built world and the true natural world is itself a form of cultural isolation.
  • Religion is a technology to discipline, to discipline certain parts of the human impulse. A lot of the book revolves around the decoded neurofeedback machine, which is a very real literalization of a technology, of changing the way we think
  • one of the things I think that we have to take seriously is that we have created technologies to supercharge some parts of our natural impulse, the capitalism I think should be understood as a technology to supercharge the growth impulse, and it creates some wonders out of that and some horrors out of that.
  • richard powersSure. I base my machine on existing technology. Decoded neurofeedback is a kind of nascent field of exploration. You can read about it; it’s been publishing results for a decade. I first came across it in 2013. It involves using fMRI to record the brain activity of a human being who is learning a process, interacting with an object or engaged in a certain emotional state. That neural activity is recorded and stored as a data structure. A second subsequent human being is then also scanned in real time and fed kinds of feedback based on their own internal neural activity as determined by a kind of software analysis of their fMRI data structures.
  • And they are queued little by little to approximate, to learn how to approximate, the recorded states of the original subject. When I first read about this, I did get a little bit of a revelation. I did feel my skin pucker and think, if pushed far enough, this would be something like a telepathy conduit. It would be a first big step in answering that age-old question of what does it feel like to be something other than we are
  • in the book I simply take that basic concept and extend it, juke it up a little bit, blur the line between what the reader might think is possible right now and what they might wonder about, and maybe even introduce possibilities for this empathetic transference
  • ezra kleinOne thing I loved about the role this played in the book is that it’s highlighting its inverse. So a reader might look at this and say, wow, wouldn’t that be cool if we had a machine that could in real time change how we think and change our neural pathways and change our mental state in a particular direction? But of course, all of society is that machine,
  • Robin and Theo are in an airport. And you’ve got TVs everywhere playing the news which is to say playing a constant loop of outrage, and disaster, and calamity. And Robbie, who’s going through these neural feedback sessions during this period, turns to his dad and says, “Dad, you know how the training’s rewiring my brain? This is what is rewiring everybody else.”
  • ezra kleinI think Marshall McLuhan knew it all. I really do. Not exactly what it would look like, but his view and Postman’s view that we are creating a digital global nervous system is a way they put it, it was exactly right. A nervous system, it was such the exact right metaphor.
  • the great insight of McLuhan, to me, what now gets called the medium is the message is this idea that the way media acts upon us is not in the content it delivers. The point of Twitter is not the link that you click or even the tweet that you read; it is that the nature and structure of the Twitter system itself begins to act on your system, and you become more like it.If you watch a lot of TV, you become more like TV. If you watch a lot of Twitter, you become more like Twitter, Facebook more like Facebook. Your identities become more important to you — that the content is distraction from the medium, and the medium changes you
  • it is happening to all of us in ways that at least we are not engaging in intentionally, not at that level of how do we want to be transformed.
  • richard powersI believe that the digital neural system is now so comprehensive that the idea that you could escape it somewhere, certainly not in the Smokies, even more remotely, I think, becomes more and more laughable. Yeah, and to build on this idea of the medium being the message, not the way in which we become more like the forms and affordances of the medium is that we begin to expect that those affordances, the method in which those media are used, the physiological dependencies and castes of behavior and thought that are required to operate them and interact with them are actual — that they’re real somehow, and that we just take them into human nature and say no, this is what we’ve always wanted and we’ve simply been able to become more like our true selves.
  • Well, the warpage in our sense of time, the warpage in our sense of place, are profound. The ways in which digital feedback and the affordances of social media and all the rest have changed our expectations with regard to what we need to concentrate on, what we need to learn for ourselves, are changing profoundly.
  • If you look far enough back, you can find Socrates expressing great anxiety and suspicion about the ways in which writing is going to transform the human brain and human expectation. He was worried that somehow it was going to ruin our memories. Well, it did up to a point — nothing like the way the digital technologies have ruined our memories.
  • my tradition is Jewish, the Sabbath is a technology, is a technology to create a different relationship between the human being, and time, and growth, and productive society than you would have without the Sabbath which is framed in terms of godliness but is also a way of creating separation from the other impulses of the weak.
  • Governments are a technology, monogamy is a technology, a religiously driven technology, but now one that is culturally driven. And these things do good and they do bad. I’m not making an argument for any one of them in particular. But the idea that we would need to invent something wholly new to come up with a way to change the way human beings act is ridiculous
  • My view of the story of this era is that capitalism was one of many forces, and it has become, in many societies, functionally the only one that it was in relationship with religion, it was in relationship with more rooted communities.
  • it has become not just an economic system but a belief system, and it’s a little bit untrammeled. I’m not an anti-capitalist person, but I believe it needs countervailing forces. And my basic view is that it doesn’t have them anymore.
  • the book does introduce this kind of fable, this kind of thought experiment about the way the affordances that a new and slightly stronger technology of empathy might deflect. First of all, the story of a little boy and then the story of his father who’s scrambling to be a responsible single parent. And then, beyond that, the community of people who hear about this boy and become fascinated with him as a narrative, which again ripples outward through these digital technologies in ways that can’t be controlled or whose consequences can be foreseen.
  • I’ve talked about it before is something I’ve said is that I think a push against, functionally, materialism and want is an important weight in our society that we need. And when people say it is the way we’ll deal with climate change in the three to five year time frame, I become much more skeptical because to the point of things like the technology you have in the book with neural feedback, I do think one of the questions you have to ask is, socially and culturally, how do you move people’s minds so you can then move their politics?
  • You’re going to need something, it seems to me, outside of politics, that changes humans’ sense of themselves more fundamentally. And that takes a minute at the scale of billions.
  • richard powersWell, you are correct. And I don’t think it’s giving away any great reveal in the book to say that a reader who gets far enough into the story probably has this moment of recursive awareness where they, he or she comes to understand that what Robin is doing in this gradual training on the cast of mind of some other person is precisely what they’re doing in the act of reading the novel “Bewilderment” — by living this act of active empathy for these two characters, they are undergoing their own kind of neurofeedback.
  • The more we understand about the complexities of living systems, of organisms and the evolution of organisms, the more capable it is to feel a kind of spiritual awe. And that certainly makes it easier to have reverence for the experiment beyond me and beyond my species. I don’t think those are incommensurable or incompatible ways of knowing the world. In fact, I think to invoke one last time that Buddhist precept of interbeing, I think there is a kind of interbeing between the desire, the true selfless desire to understand the world out there through presence, care, measurement, attention, reproduction of experiment and the desire to have a spiritual affinity and shared fate with the world out there. They’re really the same project.
  • richard powersWell, sure. If we turn back to the new forestry again and researchers like Suzanne Simard who were showing the literal interconnectivity across species boundaries and the cooperation of resource sharing between different species in a forest, that is rigorous science, rigorous reproducible science. And it does participate in that central principle of practice, or collection of practices, which always requires the renunciation of personal wish and ego and prior belief in favor of empirical reproduction.
  • I’ve begun to see people beginning to build out of the humbling sciences a worldview that seems quite spiritual. And as you’re somebody who seems to me to have done that and it has changed your life, would you reflect on that a bit?
  • So much of the book is about the possibility of life beyond Earth. Tell me a bit about the role that’s playing. Why did you make the possibility of alien life in the way it might look and feel and evolve and act so central in a book about protecting and cherishing life here?
  • richard powersI’m glad that we’re slipping this in at the end because yes this framing of the book around this question of are we alone or does the universe want life it’s really important. Theo, Robin’s father, is an astrobiologist.
  • Imagine that everything happens just right so that every square inch of this place is colonized by new forms of experiments, new kinds of life. And the father trying to entertain his son with the story of this remarkable place in the sun just stopping him and saying, Dad, come on, that’s asking too much. Get real, that’s science fiction. That’s the vision that I had when I finished the book, an absolutely limitless sense of just how lucky we’ve had it here.
  • one thing I kept thinking about that didn’t make it into the final book but exists as a kind of parallel story in my own head is the father and son on some very distant planet in some very distant star, many light years from here, playing that same game. And the father saying, OK, now imagine a world that’s just the right size, and it has plate tectonics, and it has water, and it has a nearby moon to stabilize its rotation, and it has incredible security and safety from asteroids because of other large planets in the solar system.
  • they make this journey across the universe through all kinds of incubators, all kinds of petri dishes for life and the possibilities of life. And rather than answer the question — so where is everybody? — it keeps deferring the question, it keeps making that question more subtle and stranger
  • For the purposes of the book, Robin, who desperately believes in the sanctity of life beyond himself, begs his father for these nighttime, bedtime stories, and Theo gives him easy travel to other planets. Father and son going to a new planet based on the kinds of planets that Theo’s science is turning up and asking this question, what would life look like if it was able to get started here?
sissij

Bacteria Have a Social Contract, and Unnamed Natural Laws | Big Think - 1 views

  • the evolutionary logic of relationships beyond rivalry
  • ~98% of bacterial species don’t thrive outside mixed-species colonies.
  • Bacteria are not self-sufficient: They’ve co-evolved to depend on each other.
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  • You’re in a collective extended “survival vehicle” relationship.
  • In a kind of no-brainer biochemical “social contract,” bacterial colonies, like human communities, have to handle the “common good” (suppressing cheating, free-riding, the “tragedy of the commons,” etc).
  • We dominate because we’re the best cooperators (Yuval Harari).
  • Evolution is itself a free-floating logic pattern (for discovering other, ever more effective logic patterns, and enacting “competence without comprehension").
  • Evolution’s logic is like geometry’s: in both relevant patterns and results arise from the intrinsic logic of the elements involved. In geometry, it’s lines, planes, etc. In evolution it’s kinetic functions like survival, varying replication, and adaptation.
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    I found this article very interesting. Evolution does not happen physically. There is also evolution in the social behavior and relationship in a specie. Even simple organisms like single-celled bacteria have certain behaviors that suggest evolution in "social behavior" even though they don't have brain or intelligence. I feel like it is just like the hydrogen bonds in chemistry that it forms naturally without a doubt. Common good is the ultimate goal of the nature. I think the logic is evolution is very amazing as all the results are because of mindless discovery. --Sissi (3/30/2017)
grayton downing

Ancient Georgian Ancestors | The Scientist Magazine® - 0 views

  • unearthed the first ever completely preserved skull of an adult hominin from the Paleolithic era—spanning approximately 2.6 million to 10,000 years ago.
  • l is clearly the cherry on the cake, however, because it is “spectacularly complete,” said White. “It’s an amazing skull,” added Robert Foley, a professor of human evolution at the University of Cambridge, who also was not involved in the work. “Just a fantastic specimen.”
  • Its matching cranium was discovered five years later. It was easy to tell the parts were from the same individual, however, because “the teeth match with each other,”
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  • features of the skull, it is thought to have been a male with large cheek bones, teeth, and jaws, but a small brain
  • newly described skull also expands the morphological variability of the specimens found at the Dmanisi site—some of which appear less primitive. Despite this variability, Zollikofer believes all the specimens are members of the same species. That would be “the most parsimonious explanation,”
  • He suggested that other hominin fossils previously classified as separate species—such as H. habilis, H. rudolfensis, and H. erectus—should be re-examined.
  • urge for a change in perspective, because what has happened in the last ten years is that people tried to divide—they tried to show species diversity—and what we try to show now is diversity, but within one single evolving species,” Zollikofer said.
anonymous

The Perseverance of New York City's Wildflowers - The New York Times - 0 views

  • The Perseverance of New York City’s Wildflowers
  • A park in Williamsburg awaits the miniature beauty of its spring blossoms.
  • In Williamsburg, on a seven-acre park by the East River, spring will soon unfurl in blue blossoms
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  • Cornflowers are always the first to bloom in the pollinator meadow of Marsha P. Johnson State Park, a welcome sign to bees and people that things are beginning to thaw.
  • If New York City has a warm spring, the cornflowers may open up by late April, eventually followed by orange frills of butterfly milkweed, purple spindly bee balm and yolk-yellow, black-eyed Susans that also inhabit the meadow — hardy species that can weather the salty spray that confronts life on the waterfront.
  • Not all of these flowers are native to New York, or even North America, but they have sustained themselves long enough to become naturalized
  • These species pose little threat to native wildlife, unlike more domineering introduced species such as mugwort, an herb with an intrepid rhizome system.
  • A wildflower can refer to any flowering plant that was not cultivated, intentionally planted or given human aid, yet it still managed to grow and bloom.
  • This is one of several definitions offered by the plant ecologist Donald J. Leopold in Andrew Garn’s new photo book “Wildflowers of New York City,” and one that feels particularly suited to the city and its many transplants.
  • Scarlet bee balm.
  • Ms. Lopez, who grew up on the Upper West Side near a sooty smokestack, has always longed for more green spaces in the city.
  • In February of 2020, Gov. Andrew Cuomo renamed the park after the activist Marsha P. Johnson, one of the central figures of the Stonewall riots and a co-founder of Street Transvestite Action Revolutionaries with the activist Sylvia Rivera. Ms. Johnson, who died in 1992 of undetermined causes, would have turned 75 in August 2020.
  • Mr. Garn did not intend for “Wildflowers of New York City” to be a traditional field guide for identifying flowers. Rather, his reverent portraits invite us to delight in the beauty of flowers that we more often encounter in a sidewalk crack than in a bouquet.
  • Marsha P. Johnson, a central figure of the Stonewall riots and a co-founder of Street Transvestite Action Revolutionaries
  • Ms. Johnson was known for wearing crowns of fresh flowers that she would arrange from leftover blooms and discarded daffodils from the flower district in Manhattan, where she often slept.
  • In one photo, Ms. Johnson wears a crown of roses, carnations, chrysanthemums, frilly tulips, statice and baby’s breath.
  • Although cumulous clusters of baby’s breath are now a staple of floral arrangements, the species is a wildflower native to central and Eastern Europe.
  • Ms. Lopez and STARR have criticized a proposal for a new $70 million beach scheduled to be built on Gansevoort Peninsula, near waterfronts where Ms. Rivera once lived and Ms. Johnson died. In its place, she suggests a memorial garden for Ms. Johnson, Ms. Rivera and other transgender people
  • “We will never feed enough people, we will never plant enough flowers, never be good enough to honor Sylvia and Marsha,” Ms. Lopez said. “They cared too much, even when no one cared for them.”
  • “I have candles lit always for Marsha and Sylvia, but I’m praying especially hard now that we get a plan that includes lots of flowers,” said Mariah Lopez, the executive director of Strategic Trans Alliance for Radical Reform, or STARR, an advocacy group.
  • Her dream of the park includes a range of verdant and functional spaces: a paved area where people can vogue and hold rallies, a flower garden in tribute to Ms. Johnson, a greenhouse and an apiary for bees.
  • Tansy.
  • The redesign of the park will add a new fence around the meadow, as well as interpretive signs about the pollinators who depend on its wildflowers. “What would happen if there were no bees in the world?”
  • “We have to protect them. That’s what the function of this sweet little meadow is.”
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    Real life story and example of how we treat history- what stories we're telling, who we're trying to save.
Javier E

Dengue Mosquitoes Can Be Tamed by a Common Microbe - The Atlantic - 0 views

  • Dengue fever is caused by a virus that infects an estimated 390 million people every year, and kills about 25,000; the World Health Organization has described it as one of the top 10 threats to global health.
  • It spreads through the bites of mosquitoes, particularly the species Aedes aegypti. Utarini and her colleagues have spent the past decade turning these insects from highways of dengue into cul-de-sacs. They’ve loaded the mosquitoes with a bacterium called Wolbachia, which prevents them from being infected by dengue viruses. Wolbachia spreads very quickly: If a small number of carrier mosquitoes are released into a neighborhood, almost all of the local insects should be dengue-free within a few months
  • Aedes aegypti was once a forest insect confined to sub-Saharan Africa, where it drank blood from a wide variety of animals. But at some point, one lineage evolved into an urban creature that prefers towns over forests, and humans over other animals.
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  • The World Mosquito Program (WMP), a nonprofit that pioneered this technique, had run small pilot studies in Australia that suggested it could work. Utarini, who co-leads WMP Yogyakarta, has now shown conclusively that it does.
  • Carried around the world aboard slave ships, Aedes aegypti has thrived. It is now arguably the most effective human-hunter on the planet, its senses acutely attuned to the carbon dioxide in our breath, the warmth of our bodies, and the odors of our skin.
  • Wolbachia was first discovered in 1924, in a different species of mosquito. At first, it seemed so unremarkable that scientists ignored it for decades. But starting in the 1980s, they realized that it has an extraordinary knack for spreading. It passes down mainly from insect mothers to their children, and it uses many tricks to ensure that infected individuals are better at reproducing than uninfected ones. To date, it exists in at least 40 percent of all insect species, making it one of the most successful microbes on the planet.
  • The team divided a large portion of the city into 24 zones and released Wolbachia-infected mosquitoes in half of them. Almost 10,000 volunteers helped distribute egg-filled containers to local backyards. Within a year, about 95 percent of the Aedes mosquitoes in the 12 release zones harbored Wolbachia.
  • The team found that just 2.3 percent of feverish people who lived in the Wolbachia release zones had dengue, compared with 9.4 percent in the control areas. Wolbachia also seemed to work against all four dengue serotypes, and reduced the number of dengue hospitalizations by 86 percent.
  • Even then, these already remarkable numbers are likely to be underestimates. The mosquitoes moved around, carrying Wolbachia into the 12 control zones where no mosquitoes were released. And people also move: They might live in a Wolbachia release zone but be bitten and infected with dengue elsewhere. Both of these factors would have worked against the trial, weakening its results
  • The Wolbachia method does have a few limitations. The bacterium takes months to establish itself, so it can’t be “deployed to contain an outbreak today,” Vazquez-Prokopec told me. As the Yogyakarta trial showed, it works only when Wolbachia reaches a prevalence of at least 80 percent, which requires a lot of work and strong community support
  • The method has other benefits too. It is self-amplifying and self-perpetuating: If enough Wolbachia-infected mosquitoes are released initially, the bacterium should naturally come to dominate the local population, and stay that way. Unlike insecticides, Wolbachia isn’t toxic, it doesn’t kill beneficial insects (or even mosquitoes), and it doesn’t need to be reapplied, which makes it very cost-effective.
  • An analysis by Brady’s team showed that it actually saves money by preventing infections
  • Wolbachia also seems to work against the other diseases that Aedes aegypti carries, including Zika and yellow fever. It could transform this mosquito from one of the most dangerous species to humans into just another biting nuisance.
knudsenlu

Neuroscience Is Making Significant Progress In Understanding Emotional Pain - 0 views

  • We are learning a lot right now about the neuroscience of emotions. Specifically, we are learning that there is a lot of overlap between the way we process physical pain and the way we process emotional pain.
  • Understanding emotional pain could be powerful in understanding a lot of the common emotional maladies that are regularly treated with psychotherapy or mood altering medications. Depression, anxiety, trauma, social pain, these are all debilitating disorders that are poorly understood and often poorly treated.
  • Humans are a unique species in two ways that account for our intense response to social rejection. We are born physically immature because of our enormous heads, and we require a lot of care early on. Because of our immaturity at birth, our species has selected for a deeply innate sense of bonding between individuals. The other unique feature of our species is that we require a lot of calories, probably also due to our oversized brains. Brains are calorie intensive organs and our brains are huge. So, humans burn about 400 more calories per day than other primates when you account for size [2]. Since we burn so much food, we as a species, have an innate drive to share food, which may have allowed us to get through bad hunting or gathering days in early human history. So, humans are naturally drawn to bond with others and to be conscious of aligning with a group of people where food sharing is possible.
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  • It makes sense then, that losing a friend, or being rejected by a group might register to a person as a very dangerous thing. Emotional pain might result if a person discovers that they weren’t invited to a dinner party with friends.
  • One thing we do know is that people who have a lot of friends have high pain thresholds
  • Look for cutting edge neuroscience coming out in the next few years that helps us understand how to raise the social pain threshold. We could, very soon, have some practical answers for people with debilitating social anxiety, depression, and loneliness.
kushnerha

Our Natural History, Endangered - The New York Times - 0 views

  • Worse, this rumored dustiness reinforces the widespread notion that natural history museums are about the past — just a place to display bugs and brontosaurs. Visitors may go there to be entertained, or even awe-struck, but they are often completely unaware that curators behind the scenes are conducting research into climate change, species extinction and other pressing concerns of our day. That lack of awareness is one reason these museums are now routinely being pushed to the brink. Even the National Science Foundation, long a stalwart of federal support for these museums, announced this month that it was suspending funding for natural history collections as it conducts a yearlong budget review.
  • It gets worse: A new Republican governor last year shut down the renowned Illinois State Museum, ostensibly to save the state $4.8 million a year. The museum pointed out that this would actually cost $33 million a year in lost tourism revenue and an untold amount in grants. But the closing went through, endangering a trove of 10 million artifacts, from mastodon bones to Native American tools, collected over 138 years, and now just languishing in the shuttered building. Eric Grimm, the museum’s director of science, characterized it as an act of “political corruption and malevolent anti-intellectualism.”
  • Other museums have survived by shifting their focus from research to something like entertainment.
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  • The pandering can be insidious, too. The Perot Museum of Nature and Science in Dallas, which treats visitors to a virtual ride down a hydraulic fracturing well, recently made headlines for avoiding explicit references to climate change. Other museums omit scientific information on evolution. “We don’t need people to come in here and reject us,”
  • Even the best natural history museums have been obliged to reduce their scientific staff in the face of government cutbacks and the decline in donations following the 2008 economic crash. They still have their collections, and their public still comes through the door. But they no longer employ enough scientists to interpret those collections adequately for visitors or the world at large. Hence the journal Nature last year characterized natural history collections as “the endangered dead.”
  • these collections are less about the past than about our world and how it is changing. Sediment cores like the ones at the Illinois State Museum, for instance, may not sound terribly important, but the pollen in them reveals how past climates changed, what species lived and died as a result, and thus how our own future may be rapidly unfolding.
  • Natural history museums are so focused on the future that they have for centuries routinely preserved such specimens to answer questions they didn’t yet know how to ask, requiring methodologies that had not yet been invented, to make discoveries that would have been, for the original collectors, inconceivable.
  • THE people who first put gigantic mammoth and mastodon specimens in museums, for instance, did so mainly out of dumb wonderment. But those specimens soon led to the stunning 18th-century recognition that parts of God’s creation could become extinct. The heretical idea of extinction then became an essential preamble to Darwin, whose understanding of evolution by natural selection depended in turn on the detailed study of barnacle specimens collected and preserved over long periods and for no particular reason. Today, those same specimens continue to answer new questions with the help of genome sequencing, CT scans, stable isotope analysis and other technologies.
  • These museums also play a critical role in protecting what’s left of the natural world, in part because they often combine biological and botanical knowledge with broad anthropological experience.
  • “You have no nationality. You are scientists. You speak for nature.” Just since 1999, according to the Field Museum, inventories by its curators and their collaborators have been a key factor in the protection of 26.6 million acres of wilderness, mainly in the headwaters of the Amazon.
  • It may be optimistic to say that natural history museums have saved the world. It may even be too late for that. But they provide one other critical service that can save us, and our sense of wonder: Almost everybody in this country — even children in Denver who have never been to the Rocky Mountains, or people in San Francisco who have never walked on a Pacific Ocean beach — goes to a natural history museum at some point in his life, and these visits influence us in deep and unpredictable ways.
  • we dimly begin to understand the passage of time and cultures, and how our own species fits amid millions of others. We start to understand the strangeness and splendor of the only planet where we will ever have the great pleasure of living.
Sophia C

BBC News - Viewpoint: Human evolution, from tree to braid - 0 views

  • What was, in my view, a logical conclusion reached by the authors was too much for some researchers to take.
  • he conclusion of the Dmanisi study was that the variation in skull shape and morphology observed in this small sample, derived from a single population of Homo erectus, matched the entire variation observed among African fossils ascribed to three species - H. erectus, H. habilis and H. rudolfensis.
  • a single population of H. erectus,
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  • They all had to be the same species.
  • was not surprising to find that Neanderthals and modern humans interbred, a clear expectation of the biological species concept.
  • I wonder when the penny will drop: when we have five pieces of a 5,000-piece jigsaw puzzle, every new bit that we add is likely to change the picture.
  • e identity of the fourth player remains unknown but it was an ancient lineage that had been separate for probably over a million years. H. erectus seems a likely candidate. Whatever the name we choose to give this mystery lineage, what these results show is that gene flow was possible not just among contemporaries but also between ancient and more modern lineages.
  • cientists succeeded in extracting the most ancient mitochondrial DNA so far, from the Sima de los Huesos site in Atapuerca, Spain.
  • We have built a picture of our evolution based on the morphology of fossils and it was wrong.
    • Sophia C
       
      Kuhn
  • when we know how plastic - or easily changeable - skull shape is in humans. And our paradigms must also change.
  • e must abandon, once and for all, views of modern human superiority over archaic (ancient) humans. The terms "archaic" and "modern" lose all meaning as do concepts of modern human replacement of all other lineages.
  • he deep-rooted shackles that have sought to link human evolution with stone tool-making technological stages - the Stone Ages - even when we have known that these have overlapped with each other for half-a-million years in some instances.
  • e world of our biological and cultural evolution was far too fluid for us to constrain it into a few stages linked by transitions.
  • We have to flesh out the genetic information and this is where archaeology comes into the picture.
  • Rather than focus on differences between modern humans and Neanderthals, what the examples show is the range of possibilities open to humans (Neanderthals included) in different circumstances.
  • research using new technology on old archaeological sites, as at La Chapelle; and
maddieireland334

'New species' of ancient human found - BBC News - 0 views

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    A new species of ancient human has been unearthed in the Afar region of Ethiopia, scientists report. Researchers discovered jaw bones and teeth, which date to between 3.3m and 3.5m years old. It means this new hominin was alive at the same time as several other early human species, suggesting our family tree is more complicated than was thought.
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