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Javier E

The Arrogance of the Anthropocene - The Atlantic - 0 views

www.theatlantic.com/...595795

anthropocene geology history arrogance

shared by Javier E on 13 Aug 19 - No Cached
  • Each year we spew more than 100 times as much CO2 into the air as volcanoes do, and we’re currently overseeing the biggest disruption to the planet’s nitrogen cycle in 2.5 billion years. But despite this incredible effort, all is vanity. Very little of our handiwork will survive the obliteration of the ages
  • At the end of all their travels—after cataloging all the bedrock of the entire planet—they might finally be led to an odd, razor-thin stratum hiding halfway up some eroding, far-flung desert canyon
  • Unless we fast learn how to endure on this planet, and on a scale far beyond anything we’ve yet proved ourselves capable of, the detritus of civilization will be quickly devoured by the maw of deep time.
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  • Yes, billions of dinosaur bodies died and fell to the Earth here in this span, and trillions more dinosaur footsteps pressed into the Earth, but hardly a trace remains today. A cryptic smattering of lakeside footprints represents their entire contribution to the Triassic period. A few bones and footsteps miraculously preserved in New England and Nova Scotia are all that remains from the entire 27-million-year Early Jurassic epoch. No trace of dinosaurs remains whatsoever from the 18-million-year Late Jurassic. A handful of bones from one layer in Maryland represents the entire 45-million-year Early Cretaceous; the Late Cretaceous gives up a Hadrosaurus in New Jersey, and part of a tyrannosaur in Alabama, but mostly comprises unimpressive fragments of bone and teeth that cover the remaining 34 million years of the Earth’s most storied age, until doomsday
  • So that’s what 180 million years of complete dominance buys you in the fossil record. What, then, will a few decades of industrial civilization get us? This is the central question of the Anthropocene—an epoch that supposedly started, not tens of millions of years ago, but perhaps during the Truman administration
  • as the example of the dinosaurs shows, the chance that any city-swallowing delta deposit from a window of time only a few centuries wide would be lucky enough to be not only buried and preserved for safekeeping, but then subsequently not destroyed—in the ravenous maw of a subduction zone, or sinking too close to the cleansing metamorphic forge of Earth’s mantle, or mutilated in some m
  • there exists a better word in geology than epoch to describe our moment in the sun thus far: event. Indeed, there have been many similarly disruptive, rapid, and unusual episodes scattered throughout Earth history—wild climate fluctuations, dramatic sea-level rises and falls, global ocean-chemistry disasters, and biodiversity catastrophes
  • we’re very likely to return to our regularly scheduled programming and dive back into a punishing Ice Age in the next half-million years. This means that sea level—after shooting up in the coming millennia by our own hand, and potentially burying coastal settlements in sediment (good for fossilization)—will eventually fall hundreds of feet below where it is today, and subject the shallow continental shelves, along with our once submerged cities and magnificent seams of garbage, to the cold winds of erosion (bad for fossilization), where they’ll be mostly reduced to nothing
  • What else of us could be sampled from this sliver of deep-sea-muck-turned-rock—these Anthropocene clays and shale layers? Pass it through a mass spectrometer and you would see, encoded in its elements, the story of the entire planet in this strange interval, the Great Derangement of the Earth’s systems by civilization. You would see our lightning-fast injection of hundreds of gigatons of light carbon into the atmosphere written in the strange skew of carbon isotopes in this rock—as you do in rocks from the many previous carbon-cycle disasters of Earth history. The massive global-warming pulse created by this carbon disaster would be written in oxygen isotope
  • The sulfur, nitrogen, thallium, and uranium isotopes in these rocks (to mention just a few) would whisper to you—again, in squiggles on a graph—that the global ocean lost much of its oxygen during this brief but enigmatic interval. Strontium isotopes would tell you that rock weathering dramatically accelerated worldwide for a few tens of thousands of years as sweltering, violent storms attacked the rocks and wore down the continents during a brief, CO2-driven fever.
  • The most enduring geological legacy, instead, will be the extinctions we cause. The first wave of human-driven extinctions, and the largest hit to terrestrial megafauna since the extinction of the dinosaurs, began tens of thousands of years ago, as people began to spread out into new continents and islands, wiping out everything we tend to think of as “Ice Age” faun
  • nd then, after all that, find itself, at a given point in the far future, fantastically lucky enough to have been serendipitously pushed up just enough so as to be exposed at the surface, but not too high as to have been quickly destroyed by erosion … is virtually ni
  • The first major mass extinction, 445 million years ago, took place in multiple pulses across a million years. An event. The second major mass extinction, 70 million years later, took place over 600,000 years—400,000 years longer than the evolutionary history of Homo sapiens.
  • The idea of the Anthropocene inflates our own importance by promising eternal geological life to our creations. It is of a thread with our species’ peculiar, self-styled exceptionalism—from the animal kingdom, from nature, from the systems that govern it, and from time itself. This illusion may, in the long run, get us all killed.
Javier E

New Studies of Permian Extinction Shed Light on the 'Great Dying' - NYTimes.com - 0 views

www.nytimes.com/...-light-on-the-great-dying.html

permian extinction history

shared by Javier E on 09 Aug 13 - No Cached
  • Dr. Clapham and his co-author, Jonathan L. Payne, a Stanford geochemist, concluded that animals with skeletons or shells made of calcium carbonate, or limestone, were more likely to die than those with skeletons of other substances. And animals that had few ways of protecting their internal chemistry were more apt to disappear. Being widely dispersed across the planet was little protection against extinction, and neither was being numerous. The deaths happened throughout the ocean. Nor was there any correlation between extinction and how a creature moved or what it ate. Instead, the authors concluded, the animals died from a lack of dissolved oxygen in the water, an excess of carbon dioxide, a reduced ability to make shells from calcium carbonate, altered ocean acidity and higher water temperatures. They also concluded that all these stresses happened rapidly and that each one amplified the effects of the others. That led to a wholesale change in the ocean’s dominant animals within just 200,000 years, or perhaps much less, Dr. Clapham said.
  • So what happened 252 million years ago to cause those physiological stresses in marine animals? Additional clues from carbon, calcium and nitrogen isotopes of the period, as well as from organic geochemistry, suggest a “perturbation of the global carbon cycle,” the scientists’ second paper concluded — a huge infusion of carbon into the atmosphere and the ocean.
  • scientists suspect that the answer lies in the biggest volcanic event of the past 500 million years — the eruptions that formed the Siberian Traps, the stairlike hilly region in northern Russia. The eruptions sent catastrophic amounts of carbon gas into the atmosphere and, ultimately, the oceans; that led to long-term ocean acidification, ocean warming and vast areas of oxygen-poor ocean water
Javier E

Researchers Propose Earth's 'Anthropocene' Age of Humans Began With Fallout and Plastic... - 0 views

dotearth.blogs.nytimes.com/...egan-with-fallout-and-plastics

anthropocene geology human effects

shared by Javier E on 18 Jan 15 - No Cached
  • we’ve left the Holocene behind — that’s the geological epoch since the end of the last ice age — and entered “a post-Holocene…geological age of our own making,” now best known as the Anthropocene.
  • the Anthropocene Working Group (because of my early writings, I’m a lay member), has moved substantially from asking whether such a transition has occurred to deciding when.
  • 1950 as the starting point, indicated by a variety of markers, including the global spread of carbon isotopes from nuclear weapon detonations starting in 1945 and the mass production and disposal of plastics.
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  • There’s little predictability in how things will play out after this anthropogenic jolt, especially in the living world. [More on the “great acceleration” behind the jolt is here.]
  • That’s a very different sensation than, say, mourning the end of nature. It’s more a celebration, in a way — a deeper acceptance of our place on the planet, with all of our synthetic trappings, and our faults, as fundamentally natural.
  • on whether it’s possible to have a “good Anthropocene.” Kolbert’s Twitter post last spring nicely captured their view:
  • Taking full ownership of the Anthropocene won’t be easy. The necessary feeling is a queasy mix of excitement and unease. I’ve compared it to waking up in the first car on the first run of a new roller coaster that hasn’t been examined fully by engineers.
  • Once you begin to get the many feedbacks bouncing off each other and bouncing off the Earth system, it’s going to be very hard to follow what’s going to happen, particularly biologically…. One could not imagine, at the very end of the Cretaceous, the beginning of the Tertiary, that the mammals — these itty-bitty little squeaky furry things, would take over – effectively taking the position that the dinosaurs held for so long. All we can say is that, for sure, it will be different. We’re going down a different trouser leg of history.
  • in the broadest sense we have to embrace the characteristics, good and bad, that make humans such a rare thing — a species that has become a planet-scale force.
  • “The way I would like to see it is in, say, 100 years in the future the London Geological Society will look back and consider this period…a transition from the lesser Anthropocene to the greater Anthropocene.”
  • Fully integrating this awareness into our personal choices and societal norms and policies will take time. It is “the great work,” as Thomas Berry put it.
  • Technology alone will not do the trick. Another keystone to better meshing humanity’s infinite aspirations with life on a finite planet will be slowly shifting value systems from the foundation up
  • Edward O. Wilson’s “Biophilia” was a powerful look outward at the characteristics of the natural world that we inherently cherish.
  • Now we need a dose of what I’ve taken to calling anthropophilia, as well.
  • We have to accept ourselves, flaws and all, in order to move beyond what has been something of an unconscious, species-scale pubescent growth spurt, enabled by fossil fuels in place of testosterone.
  • We’re stuck with “The World With Us.” It’s time to grasp that uncomfortable, but ultimately hopeful, idea.
rachelramirez

Putin 'Probably Approved' Litvinenko Poisoning, British Inquiry Says - The New York Times - 0 views

www.nytimes.com/...poisoning-inquiry-britain.html

putin poisoning new york times politics Crisis

shared by rachelramirez on 21 Jan 16 - No Cached
  • Putin ‘Probably Approved’ Litvinenko Poisoning, British Inquiry Says
  • The report could revive strains in relations between Britain and Russia, which were plunged into a chill reminiscent of the Cold War by the death of Mr. Litvinenko
  • a former K.G.B. officer turned critic of the Kremlin, concluded in a report released on Thursday that his murder “was probably approved” by President Vladimir V. Putin of Russia and the head of the country’s spy service.
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  • Mr. Litvinenko died 22 days after ingesting green tea laced with polonium 210 — a rare and highly toxic isotope — in the company of two Russian associates
Javier E

The collective madness behind Britain's latest Brexit plan - The Washington Post - 0 views

www.washingtonpost.com/...9-81fd-b7b05d5bed90_story.html

brexit uk politics crisis populism

shared by Javier E on 03 Feb 19 - No Cached
  • Instead of grappling with the hard choices the vote required, May pretended that Brexiteers could have everything they wanted: London would get back control of regulatory decisions. And the border with Ireland would stay open. The fact that these two promises were incompatible was never addressed. She just kept on pretending that it was all possible and that people should have greater faith. 
  • There was a weird, and very un-British, quasi-religious undercurrent to all this — a sense that things would work if you just believed in them hard enough
  • Also discernable were a hatred of practical judgment and a bubbling tide of chest-beating jingoistic nationalism
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  • Brexit was a political project based on the idea that identity politics could answer technocratic questions. If the technocratic question keeps proving problematic, you just need to have more faith in your identity. It was like trying to unlock a door with a slice of bread.
  • It said, in a not legally binding manner, that Parliament would back the Brexit deal if “alternative arrangements” were found for the backstop. What were these alternative arrangements? How do you promise to keep a border open while simultaneously not promising to keep a border open? Brady couldn’t say. Neither could the prime minister or any other member of her government. They had no idea what they were doing. They just needed some words, any words, that could win majority support in the Commons. The fact that the specific words they chose made no sense was an advantage: If the amendment had made sense, someone would have taken offense at its implications
  • The most common idea among Brexiteers is that they will use “high-tech solutions” to remove the need for checks at the border. But the technology they are wishing for does not exist anywhere on Earth. It is science fiction.
  • Not only did Brady’s proposition have no meaning, it was common knowledge before it was voted on that it could not be delivered
  • That’s what made the debate so truly pitiful. It was a return to the world of fairy tales and hallucinations, of the kind of quasi-religious nationalist politics that have fueled the Brexit project from the start. British politicians were confronted with reality and given a chance to fix the problems with Brexit instead of pretending there weren’t any, and they once again fled back into mythmaking
  • The country is now on the verge of disaster. On March 29, unless something is done, Britain will fall out the European Union without a deal. That will affect every aspect of the economy. It’s likely to block cargo  at the border; pulverize agricultural exports; trigger shortages of food, medicine and radioactive isotopes; spark employment chaos by suddenly canceling the mutual recognition of qualifications between British and European institutions; halt the legal basis for data transfer overnight; and lead to massive and sudden flows of immigration in both directions. The list goes on and on. There is no part of society that is unaffected. And yet not only does the British political class not seem to understand the consequences of what it is doing, it is lost in populist fantasies instead of addressing the cold reality
  • Britain is one of the richest and most advanced democracies in the world. It is currently locked in a room, babbling away to itself hysterically while threatening to blow its own kneecaps off. This is what nationalist populism does to a country.
Javier E

Anthropocene.pdf - 0 views

DIIGO_FILE_HOME/7ui9/rqec

anthropocene history concept

shared by Javier E on 05 Sep 21 - No Cached
  • the first significant human use of fossil fuels—coal— arose during the Song dynasty (960–1279) in China [36,37]. Drawn from mines in the north, the Chinese coal industry, developed primarily to support its iron industry, grew in size through the eleventh century to become equal to the production of the entire European (excluding Russia) coal industry in 1700.
  • the European coal industry, primarily in England, was beginning its ascent in the thirteenth century. The use of coal grew as did the size of London, and became the fuel of choice in the city because of its high energy density.
  • energy constraints provided a strong bottleneck for the growth of human numbers and activity. The discovery and exploitation of fossil fuels shattered that bottleneck. Fossil fuels represented a vast energy store of solar energy from the past that had accumulated from tens or hundreds of millions of years of photosynthesis. They were the perfect fuel source—energy-rich, dense, easily transportable and relatively straightforward to access. Human energy use rose sharply. In general, those industrial societies used four or five times as much energy as their agrarian predecessors, who in turn used three or four times as much as our hunting and gathering forebears [52].
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  • So when did the Anthropocene actually start? It is difficult to put a precise date on a transition that occurred at different times and rates in different places, but it is clear that in 1750, the Industrial Revolution had barely begun but by 1850 it had almost completely transformed England and had spread to many other countries in Europe and across the Atlantic to North America. We thus suggest that the year AD 1800 could reasonably be chosen as the beginning of the Anthropocene
  • The fraction of the land surface devoted to intensive human activity rose from about 10 to about 25–30% [56]
  • Only by 1850 did the CO 2 concentration (285 ppm) reach the upper limit of natural Holocene variability and by 1900 it had climbed to 296 ppm [58], just high enough to show a discernible human influence beyond natural variability. Since the mid-twentieth century, the rising concentration and isotopic composition of CO 2 in the atmosphere have been measured directly with great accuracy [60], and has shown an unmistakable human imprint.
  • The result of these and other energy-dependent processes and activities was a significant increase in the human enterprise and its imprint on the environment. Between 1800 and 2000, the human population grew from about one billion to six billion, while energy use grew by about 40-fold and economic production by 50-fold [55].
  • The human enterprise switched gears after World War II. Although the imprint of human activity on the global environment was, by the mid-twentieth century, clearly discernible beyond the pattern of Holocene variability in several important ways, the rate at which that imprint was growing increased sharply at midcentury. The change was so dramatic that the 1945 to 2000+ period has been called the Great Acceleration
  • What finally triggered the Great Acceleration after the end of World War II? This war undoubtedly drove the final collapse of the remaining pre-industrial European institutions that contributed to the depression and, indeed, to the Great War itself. But many other factors also played an important role [55,61]. New international institutions—the so-called Bretton Woods institutions—were formed to aid economic recovery and fuel renewed economic growth. Led by the USA, the world moved towards a system built around neo-liberal economic principles, characterized by more open trade and capital flows. The post-World War II economy integrated rapidly, with growth rates reaching their highest values ever in the 1950–1973 period.
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