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Javier E

So Bill Gates Has This Idea for a History Class ... - NYTimes.com - 0 views

www.nytimes.com/...-idea-for-a-history-class.html

big history history education

shared by Javier E on 06 Sep 14 - No Cached
  • Last month, the University of California system announced that a version of the Big History Project course could be counted in place of a more traditional World History class, paving the way for the state’s 1,300 high schools to offer it.
  • “We didn’t know when the last time was that somebody introduced a new course into high school,” Gates told me. “How does one go about it? What did the guy who liked biology — who did he call and say, ‘Hey, we should have biology in high school?’ It was pretty uncharted territory. But it was pretty cool.”
  • The American high school experience, at least as we now know it, is a relatively recent invention. Attendance did not start to become mandatory until the 1850s, and the notion of a nationwide standardized curriculum didn’t emerge until the turn of the century. But by the early 1900s, most children were taking the same list of classes that remains recognizable to this day: English, math, science and some form of history. For much of the 20th century, this last requirement would usually take the form of Western Civilization, a survey course that focused on European countries from around the rise of Rome through modernity.
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  • “I remember the chain of thought,” he said. “I had to do prehistory, so I have to do some archaeology. But to do it seriously, I’m going to talk about how humans evolved, so, yikes, I’m in biology now. I thought: To do it seriously, I have to talk about how mammals evolved, how primates evolved. I have to go back to multicelled organisms, I have to go back to primeval slime. And then I thought: I have to talk about how life was created, how life appeared on earth! I have to talk geology, the history of the planet. And so you can see, this is pushing me back and back and back, until I realized there’s a stopping point — which is the Big Bang.” He paused. “I thought, Boy, would that be exciting to teach a course like this!”
  • In the wake of McNeill’s rebuke, Western Civ was slowly replaced by World History, a more comparative class that stressed broad themes across cultures and disciplines. Over the past 30 years, World History has produced its own formidable academic institutions and journals; these days, three-quarters of all American students take World History
  • by the early ‘70s, as the Vietnam War heightened interest in nations outside Europe, Western Civ was on the decline. In pedagogical circles, a book called “The Rise of the West: A History of the Human Community,” by William Hardy McNeill, a historian at the University of Chicago, persuasively argued that Western Civ was not merely biased against other cultures but also failed to account for the enormous influence that cultures had on one another over the millenniums.
  • Gates has insisted on tracking this venture as he would any Microsoft product or foundation project. The Big History Project produces reams of data — students and teachers are regularly surveyed, and teachers submit the results from classes, all of which allows his team to track what’s working and what isn’t as the course grows. “Our priority,” he told me from across the table, “was to get it into a form where ambitious teachers could latch onto it.”
  • They have monitored teacher feedback closely and decreased the course in size, from 20 units to 10. True to Christian’s original style, however, the high-school course links insights across subjects into wildly ambitious narratives. The units begin with the Big Bang and shift to lesson plans on the solar system, trade and communications, globalization and, finally, the future. A class on the emergence of life might start with photosynthesis before moving on to eukaryotes and multicellular organisms and the genius of Charles Darwin and James Watson. A lecture on the slave trade might include the history of coffee beans in Ethiopia.
  • “Most kids experience school as one damn course after another; there’s nothing to build connections between the courses that they take,” says Bob Bain, a professor of history and education at the University of Michigan and an adviser to the Big History Project, who has helped devise much of the curriculum. “The average kid has no way to make sense between what happens with their first-period World History class and their second-period algebra class, third-period gym class, fourth-period literature — it’s all disconnected. It’s like if I were to give you a jigsaw puzzle and throw 500 pieces on the table and say, ‘Oh, by the way, I’m not going to show you the box top as to how they fit together.’ ”
  • Christian, who is 67, now travels the world as something of an evangelist for the spread of the Big History Project. (His TED Talk, “The History of Our World in 18 Minutes,” has been viewed more than four million times online.)
  • Few schools had teachers who were willing or able to instruct a hybrid course; some schools wound up requiring that two teachers lead the class together. Gates, who had hoped to avoid bureaucracy, found himself mired in it. “You’ve got to get a teacher in the history department and the science department — they have to be very serious about it, and they have to get their administrative staff to agree. And then you have to get it on the course schedule so kids can sign up,” he said. “So they have to decide, kind of in the spring or earlier, and those teachers have to spend a lot of that summer getting themselves ready for the thing.”
  • Perhaps the largest challenge facing the Big History Project, however, is Gates himself, or at least the specter of him. To his bafflement and frustration, he has become a remarkably polarizing figure in the education world. This owes largely to the fact that Gates, through his foundation, has spent more than $200 million to advocate for the Common Core, something of a third rail in education circles
  • Diane Ravitch, an education historian at New York University who has been a vocal critic of Gates, put even it more starkly: “When I think about history, I think about different perspectives, clashing points of view. I wonder how Bill Gates would treat the robber barons. I wonder how Bill Gates would deal with issues of extremes of wealth and poverty.”
  • “It begins to be a question of: Is this Bill Gates’s history? And should it be labeled ‘Bill Gates’s History’? Because Bill Gates’s history would be very different from somebody else’s who wasn’t worth $50-60 billion.”
  • perhaps, Big History might even become a successor to Western Civ and World History.
  • he also noted that Big History — which is already being offered in South Korea, the Netherlands and, of course, Australia — had significant global potential.
  • Sam Wineburg, a professor of education and history at Stanford, told me that although he sees Big History as “an important intellectual movement,” he did not consider the class to be a suitable replacement for an actual history course. “At certain points, it becomes less history and more of a kind of evolutionary biology or quantum physics. It loses the compelling aspect that is at the heart of the word ‘history.’ ”
  • Wineburg’s deepest concern about the approach was its failure to impart a methodology to students. “What is most pressing for American high-school students right now, in the history-social-studies curriculum, is: How do we read a text? How do we connect our ability to sharpen our intellectual capabilities when we’re evaluating sources and trying to understand human motivation?” he asked. “When we think about history, what are the primary sources of Big History? The original scientific reports of the Big Bang?”
  • Barr, the principal in Brooklyn, however, came to feel that Gates’s course was better than the existing alternative. “If you were to interview many, many progressive social-studies teachers, they would tell you that World History is a completely flawed course. It’s spotty. It’s like fact soup. Kids don’t come out of it really having a sense of global history,”
Javier E

Planck Satellite Shows Image of Infant Universe - NYTimes.com - 0 views

www.nytimes.com/...-image-of-infant-universe.html

cosmology universe origins inflation

shared by Javier E on 22 Mar 13 - No Cached
  • Recorded by the European Space Agency’s Planck satellite, the image is a heat map of the cosmos as it appeared only 370,000 years after the Big Bang, showing space speckled with faint spots from which galaxies would grow over billions of years.
  • is in stunning agreement with the general view of the universe that has emerged over the past 20 years, of a cosmos dominated by mysterious dark energy that seems to be pushing space apart and the almost-as-mysterious dark matter that is pulling galaxies together. It also shows a universe that seems to have endured an explosive burp known as inflation, which was the dynamite in the Big Bang.
  • “The extraordinary quality of Planck’s portrait of the infant universe allows us to peel back its layers to the very foundations, revealing that our blueprint of the cosmos is far from complete.”
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  • Analyzing the relative sizes and frequencies of spots and ripples over the years has allowed astronomers to describe the birth of the universe to a precision that would make the philosophers weep. The new data have allowed astronomers to tweak their model a bit. It now seems the universe is 13.8 billion years old, instead of 13.7 billion, and consists by mass of 4.9 percent ordinary matter like atoms, 27 percent dark matter and 68 percent dark energy.
  • “Our ultimate goal would be to construct a new model that predicts the anomalies and links them together. But these are early days; so far, we don’t know whether this is possible and what type of new physics might be needed. And that’s exciting.”
  • The microwaves detected by the Planck date from 370,000 years after the Big Bang, which is as far back as optical or radio telescopes will ever be able to see, cosmologists say. But the patterns within them date from less than a trillionth of a second after the Big Bang, when the universe is said to have undergone a violent burst of expansion known as inflation that set cosmic history on the course it has followed ever since. Those patterns are Planck’s prize.
  • Within the standard cosmological framework, however, the new satellite data underscored the existence of puzzling anomalies that may yet lead theorists back to the drawing board. The universe appears to be slightly lumpier, with bigger and more hot and cold spots in the northern half of the sky as seen from Earth than toward the south, for example. And there is a large, unexplained cool spot in the northern hemisphere.
  • The biggest surprise here, astronomers said, is that the universe is expanding slightly more slowly than previous measurements had indicated. The Hubble constant, which characterizes the expansion rate, is 67 kilometers per second per megaparsec — in the units astronomers use — according to Planck. Recent ground-based measurements combined with the WMAP data gave a value of 69, offering enough of a discrepancy to make cosmologists rerun their computer simulations of cosmic history.
  • a Planck team member from the University of California, Berkeley, said it represents a mismatch between measurements made of the beginning of time and those made more recently, and that it could mean that dark energy, which is speeding up the expansion of the universe, is more complicated than cosmologists thought. He termed the possibility “pretty radical,” adding, “That would be pretty exciting.”
  • The data also offered striking support for the notion of inflation, which has been the backbone of Big Bang theorizing for 30 years. Under the influence of a mysterious force field during the first trillionth of a fraction of a second, what would become the observable universe ballooned by 100 trillion trillion times in size from a subatomic pinprick to a grapefruit in less than a violent eye-blink, so the story first enunciated by Alan Guth of M.I.T. goes.
  • Submicroscopic quantum fluctuations in this force field are what would produce the hot spots in the cosmic microwaves, which in turn would grow into galaxies. According to Planck’s measurements, those fluctuations so far fit the predictions of the simplest model of inflation, invented by Andrei Linde of Stanford, to a T. Dr. Tegmark of M.I.T. said, “We’re homing in on the simplest model.”
  • Cosmologists still do not know what might have caused inflation, but the recent discovery of the Higgs boson has provided evidence that the kinds of fields that can provoke such behavior really exist.
  • another clue to the nature of inflation could come from the anomalies in the microwave data — the lopsided bumpiness, for example — that tend to happen on the largest scales in the universe. By the logic of quantum cosmology, they were the first patterns to be laid down on the emerging cosmos; that is to say, when inflation was just starting.
johnsonel7

For Big History, The Past Begins At the Beginning - The New York Times - 0 views

www.nytimes.com/...t-begins-at-the-beginning.html

big history

shared by johnsonel7 on 16 Sep 19 - No Cached
  • But many historians remain skeptical. ''I strongly doubt that plate tectonics and the Big Bang might contribute to our understanding of history,'' Mr. Revel said after listening to Mr. Christian's talk at the convention.
  • ''Unfortunately,'' he wrote, ''historians have become so absorbed in detailed research that they have tended to neglect the job of building larger-scale maps of the past.''
  • To understand the last few thousand years of human history, he insisted, scholars need to understand the rest of the past as well, up to and including the Big Bang -- in short, the whole 14-billion-year span of time itself.
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  • big history will yield ''new insights into familiar historical problems, from the nature/nurture debate to environmental history to the fundamental nature of change itself.''
  • But many historians remain skeptical. ''I strongly doubt that plate tectonics and the Big Bang might contribute to our understanding of history,'' Mr. Revel said after listening to Mr. Christian's talk at the convention.
Javier E

New Approach to Explaining Evolution's Big Bang - NYTimes.com - 0 views

www.nytimes.com/...ining-evolutions-big-bang.html

evolution Cambrian trigger historical

shared by Javier E on 21 Sep 13 - No Cached
  • the first animals evolved about 750 million years ago.
  • But it’s not until around 520 million years ago that many major groups of living animals left behind their first fossils.
  • For decades, scientists have searched for the trigger that set in motion this riot of diversity in the animal kingdom.
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  • “It became apparent just how many hypotheses there were out there,” Dr. Harper said. “Thirty-plus over the past 10 years.”
  • it’s a mistake to search for a single cause. They propose that a tangled web of factors and feedbacks were responsible for evolution’s big bang.
  • Long before the Cambrian explosion, Dr. Smith and Dr. Harper argue, one lineage of animals had already evolved the genetic capacity for spectacular diversity. Known as the bilaterians, they probably looked at first like little crawling worms.
  • It took a global flood to tap that capacity,
  • They offered evidence that the Cambrian Explosion was preceded by a rise in sea level that submerged vast swaths of land, eroding the drowned rocks.
  • “There’s a big kick that correlates with the sea level rise,” Dr. Smith said of the fossil record. He and Dr. Harper propose that this kick happened thanks to the new habitats created by the sea level rise. These shallow coastal habitats were bathed in sunlight and nourished with eroding nutrients like phosphates. Animals colonized these new fertile habitats, Dr. Smith and Dr. Harper argue, and evolved to take up new ecological niches.
  • The erosion of the coastlines released calcium, which can be toxic to cells. In order to survive, animals had to evolve ways to rid themselves of the poison. One solution may have been to pack the calcium into crystals, which eventually evolved into shells, bones, and other hard tissues.
  • These shells and other hard tissues sped up animal evolution even more. Predators could grow hard claws and jaws for killing prey, and their prey could evolve hard shells and spines to defend themselves. Animals became locked in an evolutionary arms race.
Javier E

The Cosmos Is Thrumming With Gravitational Waves, Astronomers Find - The New York Times - 0 views

www.nytimes.com/...vitational-waves-nanograv.html

cosmos waves gravity

shared by Javier E on 29 Jun 23 - No Cached
  • an international consortium of research collaborations revealed compelling evidence for the existence of a low-pitch hum of gravitational waves reverberating across the universe.
  • The scientists strongly suspect that these gravitational waves are the collective echo of pairs of supermassive black holes — thousands of them, some as massive as a billion suns, sitting at the hearts of ancient galaxies up to 10 billion light-years away — as they slowly merge and generate ripples in space-time.
  • In contrast, the researchers involved in this work were looking for a collective hum at much lower frequencies — one-billionth of one hertz, far below the audible range — emanating from everywhere all at once.
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  • the results were consistent with Albert Einstein’s theory of general relativity, which describes how matter and energy warp space-time to create what we call gravity. As more data is gathered, this cosmic hum could help researchers understand how the universe achieved its current structure and perhaps reveal exotic types of matter that may have existed shortly after the Big Bang 13.7 billion years ago.
  • “The gravitational-wave background was always going to be the loudest, most obvious thing to find,” said Chiara Mingarelli, an astrophysicist at Yale University and a member of NANOGrav, which is funded by the National Science Foundation. “This is really just the beginning of a whole new way to observe the universe.”
  • Gravitational waves are created by any object that spins, such as the rotating remnants of stellar corpses, orbiting black holes or even two people “doing a do-si-do,” Dr. Mingarelli said. But unlike other types of waves, these ripples stretch and squeeze the very fabric of space-time, warping the distances between any celestial objects they pass by.
  • Gravitational waves were first detected in 2016 as audible chirps by the Laser Interferometer Gravitational-Wave Observatory, or LIGO, collaboration; the breakthrough solidified Einstein’s theory of general relativity as an accurate model of the universe and earned the project’s founders the Nobel Prize in Physics in 2017. But LIGO’s signals were mostly in the frequency range of a few hundred hertz, and were created by individual pairs of black holes or neutron stars that were 10 to 100 times as massive as our sun.
  • Each pair of supermassive black holes is generating a different note, Dr. Siemens said, “and what we’re receiving is the sum of all those signals at once.”
  • If the signal does arise from orbiting pairs of supermassive black holes, studying the gravitational-wave background will shed light on the evolutionary history of these systems and the galaxies surrounding them. But the gravitational-wave background could also be coming from something else, like hypothetical cracks in space-time known as cosmic strings.
  • Or it could be a relic of the Big Bang, akin to the cosmic microwave background, which led to fundamental discoveries about the structure of the universe to within 400,000 years of its beginning. The gravitational-wave background would be an even better primordial probe, Dr. Mingarelli said, because it would have been emitted almost instantaneously.
  • To detect the gravitational-wave background, researchers analyzed the lighthouse-like nature of pulsars. These objects act like cosmic clocks, emitting beams of radio waves that can be periodically measured on Earth.
  • Einstein’s theory of general relativity predicts that as gravitational waves sweep past pulsars, they should expand and shrink the distance between these objects and Earth, changing the time it takes for the radio signals to arrive at observers. And if the gravitational-wave background is indeed everywhere, pulsars across the universe should be affected in a correlated way.
  • The findings carry a confidence level in the range of 3.5- to 4-sigma, just shy of the 5-sigma standard generally expected by physicists to claim a smoking-gun discovery. That means the odds of seeing a result like this randomly are about 1 in 1,000 years, Dr. Mingarelli said. “That’s good enough for me, but other people want once in a million years,” she said. “We’ll get there eventually.”
  • f the ripples originated with the Big Bang, they might instead provide insight into the expansion of the cosmos or the nature of dark matter — the invisible glue scientists think holds the universe together — and perhaps even reveal new particles or forces that once existed.
  • a few more years may be needed to confirm the source of the gravitational-wave background. Researchers have already begun using their data to piece together maps of the universe and to look for intense, nearby regions of gravitational-wave signals indicative of an individual supermassive black hole binary.
Javier E

Have Dark Forces Been Messing With the Cosmos? - The New York Times - 0 views

www.nytimes.com/...cosmos-hubble-dark-energy.html

cosmos universe dark energy astronomy

shared by Javier E on 26 Feb 19 - No Cached
  • Long, long ago, when the universe was only about 100,000 years old — a buzzing, expanding mass of particles and radiation — a strange new energy field switched on. That energy suffused space with a kind of cosmic antigravity, delivering a not-so-gentle boost to the expansion of the universe.Then, after another 100,000 years or so, the new field simply winked off, leaving no trace other than a speeded-up universe.
  • astronomers from Johns Hopkins University. In a bold and speculative leap into the past, the team has posited the existence of this field to explain an astronomical puzzle: the universe seems to be expanding faster than it should be.
  • The cosmos is expanding only about 9 percent more quickly than theory prescribes. But this slight-sounding discrepancy has intrigued astronomers, who think it might be revealing something new about the universe.
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  • Adding to the confusion, there already is a force field — called dark energy — making the universe expand faster. And a new, controversial report suggests that this dark energy might be getting stronger and denser, leading to a future in which atoms are ripped apart and time ends.
  • Or it could all be a mistake. Astronomers have rigorous methods to estimate the effects of statistical noise and other random errors on their results; not so for the unexamined biases called systematic errors.
  • “The unknown systematic is what gets you in the end.
  • As space expands, it carries galaxies away from each other like the raisins in a rising cake. The farther apart two galaxies are, the faster they will fly away from each other. The Hubble constant simply says by how much
  • But to calibrate the Hubble constant, astronomers depend on so-called standard candles: objects, such as supernova explosions and certain variable stars, whose distances can be estimated by luminosity or some other feature. This is where the arguing begins
  • in 2001, a team using the Hubble Space Telescope, and led by Dr. Freedman, reported a value of 72. For every megaparsec farther away from us that a galaxy is, it is moving 72 kilometers per second faster.
  • d astronomers now say they have narrowed the uncertainty in the Hubble constant to just 2.4 percent.
  • These results are so good that they now disagree with results from the European Planck spacecraft, which predict a Hubble constant of 67.
  • What if that baby picture left out or obscured some important feature of the universe
  • Rather, the Planck group derived the value of the constant, and other cosmic parameters, from a mathematical model largely based on those microwaves
  • In short, Planck’s Hubble constant is based on a cosmic baby picture. In contrast, the classical astronomical value is derived from what cosmologists modestly call “local measurements,” a few billion light-years deep into a middle-aged universe
  • Planck is considered the gold standard of cosmology. It spent four years studying the cosmic bath of microwaves left over from the end of the Big Bang, when the universe was just 380,000 years old. But it did not measure the Hubble constant directly
  • String theory suggests that space could be laced with exotic energy fields associated with lightweight particles or forces yet undiscovered. Those fields, collectively called quintessence, could act in opposition to gravity, and could change over time — popping up, decaying or altering their effect, switching from repulsive to attractive.
  • If dark energy remains constant, everything outside our galaxy eventually will be moving away from us faster than the speed of light, and will no longer be visible. The universe will become lifeless and utterly dark.But if dark energy is temporary — if one day it switches off — cosmologists and metaphysicians can all go back to contemplating a sensible tomorrow.
  • The jury is still out. Dr. Riess said that the idea seems to work, which is not to say that he agrees with it, or that it is right. Nature, manifest in future observations, will have the final say.
  • So far, the smart money is still on cosmic confusion. Michael Turner, a veteran cosmologist at the University of Chicago and the organizer of a recent airing of the Hubble tensions, said, “Indeed, all of this is going over all of our heads. We are confused and hoping that the confusion will lead to something good!”
  • Early dark energy appeals to some cosmologists because it hints at a link to, or between, two mysterious episodes in the history of the universe.
  • The first episode occurred when the universe was less than a trillionth of a trillionth of a second old. At that moment, cosmologists surmise, a violent ballooning propelled the Big Bang; in a fraction of a trillionth of a second, this event — named “inflation” by the cosmologist Alan Guth, of M.I.T. — smoothed and flattened the initial chaos into the more orderly universe observed today. Nobody knows what drove inflation.
  • The second episode is unfolding today: cosmic expansion is speeding up.
  • The issue came to light in 1998, when two competing teams of astronomers asked whether the collective gravity of the galaxies might be slowing the expansion enough to one day drag everything together into a Big Crunch
  • To great surprise, they discovered the opposite: the expansion was accelerating under the influence of an anti-gravitational force later called dark energy
  • Dark energy comprises 70 percent of the mass-energy of the universe. And, spookily, it behaves very much like a fudge factor known as the cosmological constant, a cosmic repulsive force that Einstein inserted in his equations a century ago thinking it would keep the universe from collapsing under its own weight.
  • Under the influence of dark energy, the cosmos is now doubling in size every 10 billion years — to what end, nobody knows
  • Early dark energy, the force invoked by the Johns Hopkins group, might represent a third episode of antigravity taking over the universe and speeding it up
  • “Maybe the universe does this from time-to-time?”
  • The team focused in particular on the effects of fields associated with hypothetical particles called axions. Had one such field arisen when the universe was about 100,000 years old, it could have produced just the right amount of energy to fix the Hubble discrepancy, the team reported in a paper late last year. They refer to this theoretical force as “early dark energy.”
  • As standard candles, quasars aren’t ideal because their masses vary widely. Nevertheless, the researchers identified some regularities in the emissions from quasars, allowing the history of the cosmos to be traced back nearly 12 billion years. The team found that the rate of cosmic expansion deviated from expectations over that time span.
  • One interpretation of the results is that dark energy is not constant after all, but is changing, growing denser and thus stronger over cosmic time. It so happens that this increase in dark energy also would be just enough to resolve the discrepancy in measurements of the Hubble constant.
  • The bad news is that, if this model is right, dark energy may be in a particularly virulent and — most physicists say — implausible form called phantom energy. Its existence would imply that things can lose energy by speeding up
  • As the universe expands, the push from phantom energy would grow without bounds, eventually overcoming gravity and tearing apart first Earth, then atoms
Javier E

Who was Oppenheimer? What you need to know before watching the film - 0 views

www.thetimes.co.uk/...film-bomb-uk-release-n8z3nww85

atom bomb development Oppenheimer history

shared by Javier E on 29 Jul 23 - No Cached
  • “He’s a genius,” Groves said, untroubled that Oppenheimer’s former girlfriend, wife, brother and sister-in-law had been members of the Communist Party, and that “Oppie” himself was a known sympathiser. “He knows about everything. He can talk to you about anything you bring up. Well, not exactly. He doesn’t know anything about sports.”
  • Virtually none of the politicians born in the 19th century could comprehend the enormity of the Bomb. In 1940, when Winston Churchill’s scientific adviser Lord Cherwell sought authority to pursue Britain’s nuclear programme, the prime minister responded almost insouciantly that he had no objection to research on improved explosives, although he could see little wrong with those already in service.
  • In 1944 Churchill urged Roosevelt that the great Danish physicist Niels Bohr should be “confined” rather than permitted to vent publicly his revulsion towards Manhattan. After a meeting with Churchill, Bohr said with some bitterness: “We did not speak the same language.”
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  • After Szilard lobbied Oppenheimer unsuccessfully to oppose the use of his terrible creation, he recorded a weird, curiously believable conversation. “Oppie” told the Hungarian enigmatically: “The atomic bomb is shit.” When Szilard asked what he meant by that, Oppenheimer replied: “Well, this is a weapon which has no military significance. It will make a big bang — a very big bang — but it is not a weapon which is useful in war.”
  • Richard Rhodes, perhaps the best historian of the Bomb project, wrote in 1986: “Oppenheimer did not doubt that he would be remembered to some degree, and reviled, as the man who led the work of bringing to mankind for the first time in its history the means of its own destruction.” Yet its fulfilment became his obsession.
  • Oppenheimer seemed untroubled by misgivings. He merely drove his team with a brilliance that inspired hero-worship from his colleague Edward Teller. “Oppie knew in detail what was happening in every part of the laboratory. He was incredibly quick and perceptive in analysing human as well as technical problems . . . He knew how to organise, cajole, humour, soothe feelings — how to lead powerfully without seeming to do so.”
  • it was not him but the brutish Groves who was mandated by the US chiefs of staff to orchestrate the dropping of the two bombs, after the successful Alamogordo test. On August 6 Groves called Oppenheimer from Washington to report the destruction of Hiroshima. The scientist said: “Well, everybody is feeling reasonably good about it and I extend my heartiest congratulations. It’s been a long road.”
  • The general said: “Yes, it has been a long road and I think one of the wisest things I ever did was when I selected the director of Los Alamos.” Oppenheimer responded: “Well, I have my doubts, General Groves.”
  • . In the weeks that followed, Oppenheimer became prey to spasms of remorse, although his attitude was always ambiguous, confusing to others and perhaps to himself.
  • When Teller asked him to work on further developments of nuclear weapons, Oppenheimer said flatly: “I neither can nor will do so.” He left Los Alamos in October 1945, saying that pride in the laboratory’s achievement must be “tempered with concern . . . The peoples of the world must unite or they will perish.”
  • Curtis LeMay, the US air force chief who directed the firebombing of Japanese cities by B-29 Superfortresses that killed 300,000 Japanese before the first atomic bomb was dropped, said impenitently after the war: “Nothing new about death . . . We scorched and boiled and baked to death more people in Tokyo . . . than went up in vapour at Hiroshima and Nagasaki combined.”
  • In 1954, amid McCarthyism sweeping the US, Oppenheimer fell victim to a witch-hunt and was stripped of his security clearance. This was later restored, and in the last years before his death from cancer in 1967, aged only 62, he regained a measure of his 1945 giant’s status.
  • Yet some liberals never forgave him for having disclosed the names of left-wing sympathisers and colleagues to the FBI. I met one such victim in 1965, his old friend Haakon Chevalier, a pretty broken man who had just published a book describing his intimate relationship with Oppenheimer. It was followed by profound disillusionment when he discovered that in 1942 “Oppie” had passed information to “the Feds” that later cost Chevalier his professorship at Berkeley.
Javier E

How Netflix Is Deepening Our Cultural Echo Chambers - The New York Times - 0 views

www.nytimes.com/...ur-cultural-echo-chambers.html

echo chamber culture TV history

shared by Javier E on 11 Jan 17 - No Cached
  • The shows are separated by 40 years of technological advances — a progression from the over-the-air broadcast era in which Mr. Lear made it big, to the cable age of MTV and CNN and HBO, to, finally, the modern era of streaming services like Netflix. Each new technology allowed a leap forward in choice, flexibility and quality; the “Golden Age of TV” offers so much choice that some critics wonder if it’s become overwhelming.
  • It’s not just TV, either. Across the entertainment business, from music to movies to video games, technology has flooded us with a profusion of cultural choice.
  • offers a chance to reflect on what we have lost in embracing tech-abetted abundance. Last year’s presidential election and its aftermath were dominated by discussions of echo chambers and polarization; as I’ve argued before, we’re all splitting into our own self-constructed bubbles of reality.
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  • What’s less discussed is the polarization of culture, and the new echo chambers within which we hear about and experience today’s cultural hits
  • There’s just about nothing as popular today as old sitcoms were; the only bits of shared culture that come close are periodic sporting events, viral videos, memes and occasional paroxysms of political outrage (see Meryl Streep’s Golden Globes speech and the aftermath).
  • we’re returning to the cultural era that predated radio and TV, an era in which entertainment was fragmented and bespoke, and satisfying a niche was a greater economic imperative than entertaining the mainstream.
  • “We’re back to normal, in a way, because before there was broadcasting, there wasn’t much of a shared culture,
  • Because it featured little choice, TV offered something else: the raw material for a shared culture. Television was the thing just about everyone else was watching at the same time as you. In its enforced similitude, it became a kind of social glue, stitching together a new national identity across a vast, growing and otherwise diverse nation.
  • “For most of the history of civilization, there was nothing like TV. It was a really odd moment in history to have so many people watching the same thing at the same time.”
  • As the broadcast era morphed into one of cable and then streaming, TV was transformed from a wasteland into a bubbling sea of creativity. But it has become a sea in which everyone swims in smaller schools.
  • Only around 12 percent of television households, or about 14 million to 15 million people, regularly tuned into “NCIS” and “The Big Bang Theory,” the two most popular network shows of the 2015-16 season, according to Nielsen. Before 2000, those ratings would not even have qualified them as Top 10 shows
  • HBO’s “Game of Thrones” is the biggest prestige drama on cable, but its record-breaking finale drew only around nine million viewers
  • Netflix’s biggest original drama last year, “Stranger Things,” was seen by about 14 million adults in the month after it first aired. “Fuller House,” Netflix’s reboot of the broadcast sitcom “Full House,” attracted an audience of nearly 16 million. (These numbers are for the entire season, not for single episodes.)
  • For perspective, during much of the 1980s, a broadcast show that attracted 14 million to 16 million would have been in danger of cancellation.
  • As people pull back from broadcast and cable TV and jump deeper into streaming, we’re bound to see more shows with smaller audiences.
  • It’s possible we’re not at the end of the story. Some youngsters might argue that the internet has produced its own kind of culture, one that will become a fount of shared references for years to come. What if “Chewbacca Mom” and the blue and black/white and gold dress that broke the internet one day become part of our library of globally recognized references
Javier E

All Signs Point to Higgs Boson, but Still Waiting for Scientific Certainty - NYTimes.com - 1 views

www.nytimes.com/...-for-scientific-certainty.html

higgs boson universe physics prediction

shared by Javier E on 10 Mar 13 - No Cached
  • physicists admit that it will take more work and analysis before they will have the cold numbers that clinch the case that the new particle announced on July 4 last year is in fact the exact boson first predicted by Peter Higgs and others in 1964 to be the arbiter of mass and cosmic diversity
  • What happened in the first instant of the Big Bang? What happens at the middle of a black hole where matter and time blink in or out of existence? What is the dark matter whose gravitational influence, astronomers say, shapes the structures of galaxies, or the dark energy that is forcing the universe apart? Why is the universe full of matter but not antimatter? And what, finally, is the fate of the universe? These are all questions that the Standard Model, the vanilla-sounding set of equations that ruled physics for the last half century, does not answer
  • Some of them could be answered by the unproven theory called supersymmetry, which among other things is needed to explain why whatever mass the Higgs has is low enough to be discovered in the first place and not almost infinite. It predicts a whole new population of elementary particles — called superpartners to the particles physicists already know about — one of which could be the dark matter that pervades the universe. If such particles exist, they would affect the rate at which Higgs bosons decay into other particles, but the CERN teams have yet to record what they consider a convincing deviation from the Standard Model predictions for those decays. Supersymmetry is still at best a beautiful idea.
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  • One thing that has hampered progress is that physicists still do not agree on how much the new particle weighs.
  • What does it matter how much a Higgs boson weighs? It could determine the fate of the universe.
  • his colleagues ran the numbers and concluded that the universe was in a precarious condition and could be prone to collapse in the far, far future. The reason lies in the Higgs field, the medium of which the Higgs boson is the messenger and which determines the structure of empty space, i.e., the vacuum.
  • It works like this. The Higgs field, like everything else in nature, is lazy, and, like water running downhill, always seeks to be in the state of lowest energy. Physicists assume that the Higgs field today is in the lowest state possible, but Dr. Giudice found that was not the case. What counts as rock bottom in today’s universe could turn out to be just a plateau. Our universe is like a rock perched precariously on a mountaintop, he explained, in what physicists call a metastable state. The Higgs field could drop to a lower value by a process known as quantum tunneling, although it is not imminent.
  • If that should happen — tomorrow or billions of years from now — a bubble would sweep out through the universe at the speed of light, obliterating the laws of nature as we know them.
  • The calculations assume that the Standard Model is the final word in physics, good for all times and places and energies — something that no physicist really believes. Theories like supersymmetry or string theory could intercede at higher energies and change the outcome.
  • The calculations also depend crucially on the mass of the top quark, the heaviest known elementary particle, as well as the Higgs, neither of which have been weighed precisely enough yet to determine the fate of the universe. If the top quark were just a little lighter or the Higgs a little heavier, 130 billion electron volts, Dr. Giudice said, the vacuum would in fact be stable.
  • , “Why do we happen to live at the edge of collapse?” He went on, “In my view, the message about near-criticality of the universe is the most important thing we have learned from the discovery of the Higgs boson so far.” Guido Tonelli of CERN and the University of Pisa, said, “If true, it is somehow magic.” We wouldn’t be having this discussion, he said, if there hadn’t been enough time already for this universe to produce galaxies, stars, planets and “human beings who are attempting to produce a vision of the world,” he said.
  • “So, in some sense, we are here, because we have been lucky, because for this particular universe the lottery produced a certain set of numbers, which allow the universe to have an evolution, which is very long.”
Javier E

Legends of the Fail - NYTimes.com - 0 views

www.nytimes.com/...legends-of-the-fail.html

financial crisis europe euro interest

shared by Javier E on 11 Nov 11 - No Cached
  • This is the way the euro ends — not with a bang but with bunga bunga. Not long ago, European leaders were insisting that Greece could and should stay on the euro while paying its debts in full. Now, with Italy falling off a cliff, it’s hard to see how the euro can survive at all.
  • if you look around the world you see that the big determining factor for interest rates isn’t the level of government debt but whether a government borrows in its own currency. Japan is much more deeply in debt than Italy, but the interest rate on long-term Japanese bonds is only about 1 percent to Italy’s 7 percent. Britain’s fiscal prospects look worse than Spain’s, but Britain can borrow at just a bit over 2 percent, while Spain is paying almost 6 percent. What has happened, it turns out, is that by going on the euro, Spain and Italy in effect reduced themselves to the status of third-world countries that have to borrow in someone else’s currency, with all the loss of flexibility that implies. In particular, since euro-area countries can’t print money even in an emergency, they’re subject to funding disruptions in a way that nations that kept their own currencies aren’t
  • in the face of the current crisis, austerity has been a failure everywhere it has been tried: no country with significant debts has managed to slash its way back into the good graces of the financial markets. For example, Ireland is the good boy of Europe, having responded to its debt problems with savage austerity that has driven its unemployment rate to 14 percent. Yet the interest rate on Irish bonds is still above 8 percent — worse than Italy.
Javier E

'True Believers' by Kurt Andersen: An Interview About the '60s - Jeffrey Goldberg - The... - 0 views

www.theatlantic.com/...259840

sixties history legacy radical

shared by Javier E on 23 Jul 12 - No Cached
  • I think the 1960s were definitely a net positive for America and Americans. Civil rights and women's rights were unequivocal triumphs, as was the newly heightened awareness of what we then called "ecology." The greater tolerance for different kinds of people and for weirdness were excellent changes. Pop music had its awesome big-bang moment, as you say, and movies and visual art were transformed in interesting ways, and we middle-aged people now get to wear blue jeans and sneakers and go to rock concerts and generally behave as if we're young until we die. But we threw some baby out with the bath water. The mistrust of government that blossomed in the late '60s has become a chronic and in some ways pathological condition. We got carried away with the idea of victimhood, so that now white people and Christians and Wall Street guys cast themselves categorically as victims of bigotry. The latent American tendency toward self-righteousness and apocalyptic thinking got ratcheted up. The idea of one's "own truth" started propagating, and that solipsism is now pandemic. And as I recently argued in a Times op-ed which bugged a lot of of '60s-romanticizers on the left and libertarians on the right, I think the "if it feels good do it"/"do your own thing" paradigm of the 1960s also helped enable the greed-is-good hypercapitalism and general selfishness that grew and grew afterward.
Javier E

Finding the Higgs Leads to More Puzzles - NYTimes.com - 0 views

www.nytimes.com/...ggs-leads-to-more-puzzles.html

physics higgs boson science supersymmetry multiverse

shared by Javier E on 08 Nov 13 - No Cached
  • Taken at face value, the result implies that eventually (in 10^100 years or so) an unlucky quantum fluctuation will produce a bubble of a different vacuum, which will then expand at the speed of light, destroying everything.”
  • The idea is that the Higgs field could someday twitch and drop to a lower energy state, like water freezing into ice, thereby obliterating the workings of reality as we know it. Naturally, we would have no warning. Just blink and it’s over.
  • . You might think that finding the Higgs boson, after 50 years and $10 billion or so, would bring clarity to physics and to the cosmos. But just the opposite is true: they may have found the Higgs boson, but they don’t understand it.
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  • they don’t understand why it weighs what it does — it is about 125 times as massive as the protons that were collided to make it, not gazillions of times as heavy, as standard quantum mechanical calculations would suggest.
  • For years the preferred solution to this conundrum has been a theory called supersymmetry, which, among other things, predicted the existence of a whole new spectrum of particles, superpartners of the ones we already know, that would cancel out the quantum calculations and keep the Higgs light. One of these particles might also be the dark matter that makes up a quarter of the universe by weight.
  • experiments at CERN’s Large Hadron Collider have already eliminated the simplest versions of supersymmetry.
  • The most talked-about alternative to supersymmetry is the idea of the multiverse, an almost infinite ensemble of universes in which the value of the Higgs — as well as many other crucial parameters — is random. We just happen to live in the one in which the conditions and parameters are fit for us. This is a notion that flows naturally from string theory and modern theories of the Big Bang, but accepting multiple universes means giving up the Einsteinian dream of a single explanation for the cosmos, a painful concession.
  • “Physical science has historically progressed not only by finding precise explanations of natural phenomena, but also by discovering what sorts of things can be precisely explained. These may be fewer than we had thought.”
Javier E

What Technology Wants - 0 views

www.carnegiecouncil.org/...0329.html

technology future Technium trends scaling culture evolution

shared by Javier E on 01 Nov 10 - No Cached
  • Do you know what technology is? We commonly think about technology as anything that was invented after you were born. My friend Denny Hills made kind of a version of that through his statement, "It's anything that doesn't work yet."
  • Wired, which was not about the technology, but about the culture around the technology. We like to think of ourselves as a lifestyle magazine. We are a magazine about technology culture in the way that Rolling Stone is a magazine about music culture.
  • This book came out of a little bit of my own efforts to try to understand what technology meant and where it should fit into the realm of the world. When a new technology came along, should we embrace it, or hold off?
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  • What's the theory behind technology? Do we just deal with each one, one by one, or was there a kind of a framework to understand and have a perspective on technology?
  • All these technologies that we have now made are interrelated, they are codependent, and they form a kind of an ecosystem of technologies. You might even think of it as if these were species, as if it was a super-organism of technology.
  • I'm interested in this super-organism of all the technologies. I gave it a name. I call it the Technium.
  • In the larger sense, the Technium is anything that we make with our minds.
  • all these things are connected together and they form an interacting whole, a kind of a super-organism, that has in many ways its own slight bit of autonomy, and its own agenda.
  • It wants in the way that a plant wants light and so it will lean towards the light. It has an urgency to go towards light. It's not intelligent, it's not aware of it, but that's what it wants.
  • If it does want things, it means that it wants it independent of our choosing. At the same time we are making it; it is there because we exist. It's not independent of us, but it has some slight bit of autonomy.
  • Biologists are slowly coming around to admitting that there are directions in evolution. The standard orthodoxy for many years was that it was completely random, and that there was no direction whatsoever. Any ordinary person found that shocking because they could definitely see a direction in evolution.
  • We see an arc of increasing complexity in the long journey of life.
  • Along the long history there is movement towards increasing diversity.
  • There is also increasing movement towards specialization.
  • There is a trend towards increasing structure. Things become more and more complicated.
  • There is a trend towards emergence
  • There are other trends—towards ubiquity, towards energy efficiency, towards degrees of freedom.
  • What I'm suggesting is that there is a continuum, a connection back all the way to the Big Bang with these self-organizing systems that make the galaxies, stars, and life, and now is producing technology in the same way.
  • The energies flowing through these things are, interestingly, becoming more and more dense.
  • The amount of energy running through a sunflower, per gram per second of the livelihood, is actually greater than in the sun.
  • The most energy-dense thing that we know about in the entire universe is the computer chip in your computer. It is sending more energy per gram per second through that than anything we know.
  • The other thing that is evolving over time is the evolvability of the system. One of the things that life is doing is it's evolving its ability to evolve.
  • Another way to think about this is that one of the things that life likes to do is make eyeballs. Life evolution independently invented eyeballs 30 different times in different genres and taxonomies. It invented flapping wings four times. It invented venomous stings about 20 times independently, from bees, to snakes, to jellyfish. It also has invented minds many, many times.
  • we do know that the media that we have does rewire our brains. We know this by studies of people who are literate. They took scans in Peru of people who were illiterate and those who could read and write. They found that in fact their brains work differently—not just when they're reading, but just in general. After having five, ten or twenty years of education and learning to read and write, it actually changes how your brain works.
  • The reason why we want to embrace it with our full arms is because what technology brings us is an opportunity for everybody's special mix of talents to be expressed. Just as we all have different faces, we all have a different mix of aptitudes and abilities. We use technologies to express those things.
  • The question is: Was Moore's Law inevitable? What drives Moore's Law? Where is this coming from?
  • Moore's Law, not in terms of transistors, but in terms of measuring computer power, was happening long before Moore or anybody even noticed it. The effect was happening before anybody believed it.
  • this suggests is that this is actually an inherent attribute of the physics, and it suggests that it is independent of the economy. Even if the silicon chip had been invented in Stalinist Russia under a command economy, it probably would still follow exactly the same kind of curve.
  • Geoffrey West at the Santa Fe Institute looked at a whole bunch of technologies, like solar and batteries and other kinds of things, and they show this this scaling law holds true in many industries.
  • It has something to do with the basic shape of the economy and of physics, and it's not really a self-fulfilling prophecy. In this way I suggest that these kinds of curves are inevitable. One of the characteristics of the Technium is it exhibits these scaling laws.
  • We are going to fill the universe with all different kinds of thinkings, because only by having many different kinds of minds can we actually understand the universe. Our own mind is probably insufficient to completely comprehend the universe.
  • It's also very clear that if you are spending five or ten hours a day in front of a computer, that is going to change how your brain works. It is going to rewire how we're doing things.
  • We have a dependency on the alphabet. That's how we think about things. We need reading and writing. We think in terms of words. We imagine it. We see it around us. It's ubiquitous. We are dependent on the alphabet. That doesn't seem to bother us very much.
  • As these technologies become more ubiquitous and as we become dependent upon it, that's what it is. We will be dependent upon it. It will be our exobrain. We'll use it to remember. It will always be around.
  • We invented the external stomach, it's called cooking, that allows us to digest stuff that could not otherwise increase nutrition. It changed our jaw and our teeth. We are physically different people because of our inventions. While we can live on a raw diet, it's actually very hard to breed on a raw diet.
  • What we have done is become dependent on our technology, and we will become ever more so. That's just the definition of who we are. We are the first domesticated animals. We are a technology ourselves.
  • What I'm saying is that there is only a little more good in technology than bad, but a little is all we need. If we create one-tenth of a percent more than we destroy every year, we can make civilization, because that tenth of a percent compounded over centuries is all that we need.
  • Every time there's a new technology that comes along, we have the possibility to use it for harm or for good. We also suddenly have a new possibility and choice that we didn't have before. That new choice is that little tiny tenth of a percent that's better, because we have now another freedom that we didn't have before. That tips it into the good side. It's not much better, but that's all we need over the long term. That's why over the long term it's good, because it increases choices and possibilities.
  • Technology is not powerful unless it can be powerfully abused. There is going to be a learning period. There are going to be phases that people go through and then become addicted. They don't know how to use it.
  • DDT is horrible. Don't give it a job as a pesticide, and spray millions of acres of cotton fields. That's a terrible job and causes all kinds of havoc. Yet used locally and sprayed around households, DDT eliminates malaria and saves millions of lives a year, and it has very little environmental impact that way. That's a better job for this technology.
  • We want to find the right jobs for these things and the right frame. Just like there are no bad children, there are also no bad technologies. You've just got to find the right place for them.
  • My research has shown that there are very few species of technology that ever go extinct. That's the difference between biological evolution and technological evolution; in technology things don't go extinct. They can be resurrected.
  • Very few people go backwards. Why? Because we have to surrender so many choices and options.
  • As wholesome and as satisfying as those lives are, the price of going back to these places is surrendering choices and opportunities. In general, the whole arc of evolution is towards expanding those, and that's why by embracing technology we can align ourselves with this long arc throughout the cosmos into the future.
  • I did a calculation that showed three-quarters of the total energy that we use on the planet right now, at least in the United States, is used in servicing technology. Roughly, three-quarters of the gasoline that you use in your car is used to move the car and not you. You're just a minor passenger in this whole thing. We have energy used to heat the warehouses that are holding the stuff that we have or to move the stuff that we have. Already this Technium is consuming three-quarters of our energy.
  • That is also where it's going. There will be more technology used to support more technology. Most of the traffic on the Internet is not people talking to each other; it's machines talking to other machines.
Javier E

A Military Manual for Nonviolent War - NYTimes.com - 0 views

opinionator.blogs.nytimes.com/...tary-manual-for-nonviolent-war

non-violent activism strategy methods

shared by Javier E on 13 Feb 15 - No Cached
  • These two Serbs start with the concepts of the American academic Gene Sharp, the Clausewitz of the nonviolent movement. But they have refined and added to those ideas. In a new book, “Blueprint for Revolution,” Popovic recounts Canvas’s strategies and how people use them.
  • Otpor’s methods and signature — a stylized graphic clenched fist — have been adopted by democracy movements around the world. The Egyptian opposition used them to topple Hosni Mubarak. In Lebanon, the Serbs helped the Cedar Revolution extricate the country from Syrian control. In Maldives, their methods were the key to overthrowing a dictator who had held power for 30 years. In many other countries, people have used what Canvas teaches to accomplish other political goals, such as fighting corruption or protecting the environment.
  • “We’re here to plan a war.” Nonviolent struggle, Djinovic explained, is a war — just one fought with means other than weapons. It must be as carefully planned as a military campaign.
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  • Myth: Nonviolent struggle’s major tactic is amassing large concentrations of people. This idea is widespread because the big protests are like the tip of an iceberg: the only thing visible from a distance. Did it look like the ousting of Mubarak started with a spontaneous mass gathering in Tahrir Square? Actually, the occupation of Tahrir Square was carefully planned, and followed two years of work.
  • You can start with tactics of dispersal, such as coordinated pot-banging, or traffic slowdowns in which everyone drives at half speed. These tactics show that you have widespread support, they grow people’s confidence, and they’re safe.
  • Myth: Nonviolence might be morally superior, but it’s useless against a brutal dictator. Nonviolence is not just the moral choice; it is almost always the strategic choice. “My biggest objection to violence is the fact that it simply doesn’t work,” Popovic writes. Violence is what every dictator does best.
  • The scholars Erica Chenoweth and Maria J. Stephan analyzed campaigns of violent and nonviolent revolution in the last century (their book, “Why Civil Resistance Works,” uses Otpor’s fist as its cover image) and found that nonviolence has double the success rate of violence — and its gains have been more likely to last.
  • laughter is 10 ten times more powerful than scream. Nothing breaks people’s fear and punctures a dictator’s aura of invincibility like mockery — Popovic calls it “laughtivism.”
  • Most people don’t care about human rights. They care about having electricity that works, teachers in every school and affordable home loans. They will support an opposition with a vision of the future that promises to make their lives better.
  • on a tactical level, decentralization was critical. Otpor had only two rules: You had to be anti-Milosevic and absolutely nonviolent. Follow those rules, and you could do anything and call yourself Otpor. This kept activists feeling busy, useful and important.
  • Myth: Police, security forces and the pro-government business community are the enemy. Maybe, but it’s smarter to treat them like allies-in-waiting. Otpor never taunted or threw stones at the police. Its members cheered them and brought flowers and homemade cookies to the police station.
  • I lived in Chile when the opposition to Augusto Pinochet made mistake after mistake; advice from Otpor might have shortened the dictatorship by years. Had the Occupy movement in the United States adopted these tactics, it might still be a relevant force.
Javier E

Physicist Brian Greene: 'Factual information is not the right yardstick for religion' |... - 0 views

www.theguardian.com/...nterview-until-the-end-of-time

religion science physics music culture history

shared by Javier E on 09 Feb 20 - No Cached
  • Music to me is the most direct route that we humans have to touching something that is powerfully beyond everyday experience. It allows the mind to move into a realm that’s hard to get to, hard to reach, by any other means.
  • when you realise too that life and mind are fleeting phenomena on the cosmic timeline, you realise that we should strive not in the service of leaving a lasting legacy, but rather because we have each been given an astoundingly unlikely, profoundly precious opportunity.
  • there is great value in understanding how we fit into the largest possible landscape, the longest possible timeline. Seeing how we and our species fit in between the big bang and the closest science can take us to the end of time is something that gives us deeply illuminating context.
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  • to recognise that there is no ultimate answer hovering in the depths of space awaiting discovery. Instead, the context provided by the cosmological narrative frees us fully to develop our own, deeply and thoroughly subjective reasons for being.
Javier E

Protect biodiversity to fight climate change - The Washington Post - 0 views

www.washingtonpost.com/...earth-day-biodiversity

biodiversity climate change climate

shared by Javier E on 23 Apr 21 - No Cached
  • Giant kelp is among the best organisms on the planet for taking planet-warming gases out of the atmosphere. Buoyed by small, gas-filled bulbs called “bladders,” these huge algae grow toward the ocean surface at a pace of up to two feet per day. Their flexible stems and leafy blades form a dense underwater canopy that can store 20 times as much carbon as an equivalent expanse of terrestrial trees.
  • Yet this powerful force for planetary protection is under siege. Warming waters and worsening storms caused by climate change have weakened the kelp forests.
  • Most significantly, the demise of important predators such as otters and sea stars has led to an explosion in the population of sea urchins, which eat kelp.
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  • The Earth itself is our greatest ally in this effort. Ecosystems like California’s kelp forests absorb about half of the greenhouse gases humans emit, studies show. Without them, warming would be even worse. Nature shields us from the worst consequences of our own actions, forgiving the sins we refuse to repent.
  • If we hope to solve climate change, humanity must also address this biodiversity crisis — restoring ecosystems and the creatures that inhabit them.
  • One way to revitalize ecosystems: protect the ground they grow from.Think of the soft, spongy soil of an old-growth woodland. Here, a towering oak tree draws up water and nutrients via threadlike fungi attached to its roots. In exchange, the fungi take sugar from the oak, funneling carbon from the air into the ground.Now imagine a leaf from that oak drifting slowly to the forest floor. Perhaps it becomes food for an earthworm. Then microbes attack the earthworm’s droppings, breaking down the residue further still.Eventually, the carbon that was once a leaf can become trapped in clods of earth. Other atoms may form strong chemical bonds with minerals like iron, which prevents them from reacting with oxygen and returning to the air. Under the right conditions, carbon might stay locked away in dense, dark earth for centuries. Soils contain more carbon than the entire atmosphere and all the world’s plants combined.
  • This makes soil both a ticking time bomb and an overlooked climate solution
  • “And because soil is such an important reservoir,” Berhe said, “a small change in the release of that carbon can lead to a big change in the concentrations of greenhouse gases in the atmosphere.”
  • A 2020 analysis in the journal Nature Sustainability found that better soil stewardship could reduce emissions by at least 5.5 gigatons of carbon dioxide each year — about 15 percent of current annual emissions.
  • “Once that happens,” Berhe said, “it’s not just the carbon status of the soil that’s improved. The soil literally becomes softer. It holds more water and nutrients. It’s easier for plants to grow in … and serve as a home for the most abundant and diverse group of organisms that we know of.
  • Enhancing carbon in soils is just the beginning. In 2017, an international team of scientists set out to determine how much carbon the planet could pull out of the atmosphere, if humans would only give it a chance. In a study in the Proceedings of the National Academy of Sciences (PNAS), they concluded natural climate systems are capable of storing almost 24 gigatons of carbon dioxide per year — roughly two thirds of what people emit.
  • About half of that sequestration would be cost-effective, meaning enacting the necessary protections would cost less than the consequences of keeping that carbon in the air.
  • Of the climate solutions they studied, few delivered more carbon bang per buck than mangroves — lush systems of salt-tolerant shrubs and trees that thrive where freshwater rivers spill into the sea. Though these forests occupy just 0.5 percent of the Earth’s shorelines, they account for 10 percent of the coast’s carbon storage capacity.
  • But the unique ecosystems are too often dismissed as unproductive swamps, good for no one but the mosquitoes. In the past half-century, more than a quarter of the world’s mangroves have been destroyed — drained for development, converted for shrimp farms, poisoned by fertilizer and drowned by dammed-up streams.
  • Yet the Earth cannot compensate for all of humanity’s pollution, said William Schlesinger, former dean of Duke University’s School of the Environment and a co-author on the 2017 PNAS study. Unless people also reduce the amount of greenhouse gases we emit, no amount of ecological restoration will save us.
  • “The bottom line is we’ve got to get off of using fossil fuels in transportation and heating and lighting and everything else,”
  • In public talks, he puts it this way: “It’s easier to patch a hole in a bag than to pick up the marbles that fall out.”
  • Since the end of the last ice age, the frozen expanse at the top of the world has acted as a protective shield. During the summer, when the sun shines 24 hours a day, Arctic sea ice reflects about two-thirds of the light that hits it back into space. By contrast, the dark open ocean absorbs the majority of the sun’s heat.
  • If the Arctic loses its perpetual ice cover, it would add half a degree Celsius of warming to the global average temperature, studies suggest. The world is hurtling toward that milestone. Since 1979, the volume of ice left at the end of the summer has shrunk about 75 percent.
  • There is just one way to save it, she said: by stopping global warming. Only by ending the use of fossil fuels and eliminating greenhouse gas emissions can people prevent the Arctic from heating further and give the ice a chance to recover.
  • If we do nothing, models indicate, it will be a matter of decades before the summertime Arctic is ice-free for the first time in human history. Sea levels will surge, coastal communities will be deluged, and we will no longer have the planet’s air conditioning unit to help us cool our world down.
  • Our species evolved and our civilization was built under fairly stable climate conditions. When things changed, they changed slowly, giving us time to adapt.
  • The rapid transformation of our planet doesn’t just endanger ecosystems; humanity will suffer. People have never lived on a planet without mangroves, or peatlands, or summertime ice. We’ve never had to go without the benefits the Earth provides.
Javier E

'Game of Thrones' Finale Sets HBO Ratings Record - WSJ - 0 views

www.wsj.com/...-3-million-viewers-11558382378

tv audience culture us history commonality

shared by Javier E on 21 May 19 - No Cached
  • HBO spared no expense for “Game of Thrones,” with episodes typically costing $10 million to make and some hitting the $15 million mark
  • The 19.3-million figure for Sunday night is likely to grow during the week, as fans who missed the finale catch up. This season, “Game of Thrones” averaged nearly 44.2 million viewers per episode when delayed viewing, video on demand and streaming platforms are factored in.
  • The audience for Sunday night’s finale is even more impressive given that HBO is in only 35 million of the country’s 120 million television homes.
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  • In the epic’s first season, episodes averaged 9.3 million viewers
  • it pales in comparison to the final episodes of other iconic shows such as “M*A*S*H,” which drew 105.9 million viewers, and “Cheers,” which attracted 80 million viewers.
  • More recently, the CBS hit sitcom “The Big Bang Theory” ended its 12-season run with 18 million tuning in for the final episode.
  • The political comedy “Veep” ended its run last week with a season-high 1.1 million viewers
Javier E

Opinion | NATO Isn't Really About Defense, and It Never Was - The New York Times - 0 views

www.nytimes.com/...ato-summit-vilnius-europe.html

nato evaluation history influence defense goals

shared by Javier E on 11 Jul 23 - No Cached
  • NATO’s purpose is primarily the defense of Europe.
  • But NATO, from its origins, was never primarily concerned with aggregating military power. Fielding 100 divisions at its Cold War height, a small fraction of Warsaw Pact manpower, the organization could not be counted on to repel a Soviet invasion and even the continent’s nuclear weapons were under Washington’s control.
  • Rather, it set out to bind Western Europe to a far vaster project of a U.S.-led world order, in which American protection served as a lever to obtain concessions on other issues, like trade and monetary policy.
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  • In that mission, it has proved remarkably successful.
  • Tellingly, the scale of U.S. military aid — $47 billion over the first year of the conflict — is more than double that offered by European Union countries combined.
  • Coinciding with the global war on terrorism, the “big bang” expansion of 2004 — in which seven countries acceded — saw counterterrorism supersede democracy and human rights in alliance rhetoric. Stress on the need for liberalization and public sector reforms remained a constant.
  • In the realm of defense, the alliance was not as advertised. For decades, the United States has been the chief provider of weapons, logistics, air bases and battle plans
  • The organization pushed would-be partners to adhere to a liberal, pro-market creed, according to which — as President Bill Clinton’s national security adviser put it — “the pursuit of democratic institutions, the expansion of free markets” and “the promotion of collective security” marched in lock step. European military professionals and reform-minded elites formed a willing constituency, their campaigns boosted by NATO’s information apparatus.
  • By forbidding duplication of existing capabilities and prodding allies to accept niche roles, NATO has stymied the emergence of any semiautonomous European force capable of independent action. As for defense procurement, common standards for interoperability, coupled with the sheer size of the U.S. military-industrial sector and bureaucratic impediments in Brussels, favor American firms at the expense of their European competitors. The alliance, paradoxically, appears to have weakened allies’ ability to defend themselves.
  • Yet the paradox is only superficial. In fact, NATO is working exactly as it was designed by postwar U.S. planners, drawing Europe into a dependency on American power that reduces its room for maneuver. Far from a costly charity program, NATO secures American influence in Europe on the cheap
  • U.S. contributions to NATO and other security assistance programs in Europe account for a tiny fraction of the Pentagon’s annual budget — less than 6 percent by a recent estimate.
  • Surging demand has exacerbated this tendency as buyers rush to acquire tanks, combat aircraft and other weapons systems, locking into costly, multiyear contracts. Europe may be remilitarizing, but America is reaping the rewards.
  • In Ukraine, the pattern is clear. Washington will provide the military security, and its corporations will benefit from a bonanza of European armament orders, while Europeans will shoulder the cost of postwar reconstruction — something Germany is better poised to accomplish than the buildup of its military
  • The war also serves as a dress rehearsal for U.S. confrontation with China, in which European support cannot be so easily counted on. Limiting Beijing’s access to strategic technologies and promoting American industry are hardly European priorities, and severing European and Chinese trade is still difficult to imagine. Yet already there are signs that NATO is making headway in getting Europe to follow its lead in the theater
  • No matter their ascendance, Atlanticists fret over support for the organization being undermined by disinformation and cybermeddling.
  • Today, dissent is less audible than ever before.
  • Left parties in Europe, historically critical of militarism and American power, have overwhelmingly enlisted in the defense of the West: The trajectory of the German Greens, from fierce opponents of nuclear weapons to a party seemingly willing to risk atomic war, is a particularly vivid illustration
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