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Habitable areas of our planet are shrinking – as climate change exacerbates extreme weather

Until now, human beings have been spreading, from our beginnings in Africa, out across the globe—slowly at first, and then much faster. But a period of contraction is setting in as we lose parts of the habitable earth.

some of the world is becoming too hot for humans.

As some people flee humidity and rising sea levels, others will be forced to relocate in order to find enough water to survive.

escaping the wreckage is, almost certainly, a fantasy. Even if astronauts did cross the thirty-four million miles to Mars, they’d need to go underground to survive there. To what end?

“People think if we fuck up here on Earth we can always go to Mars or the stars,” “It’s pernicious.”

How Extreme Weather Is Shrinking the Planet, New Yorker, by Bill McKibben November 18, 2018 With wildfires, heat waves, and rising sea levels, large tracts of the earth are at risk of becoming uninhabitable. But the fossil-fuel industry continues its assault on the facts …

“……For the past few years, a tide of optimistic thinking has held that conditions for human beings around the globe have been improving. Wars are scarcer, poverty and hunger are less severe, and there are better prospects for wide-scale literacy and education. But there are newer signs that human progress has begun to flag. In the face of our environmental deterioration, it’s now reasonable to ask whether the human game has begun to falter—perhaps even to play itself out. Late in 2017, a United Nations agency announced that the number of chronically malnourished people in the world, after a decade of decline, had started to grow again—by thirty-eight million, to a total of eight hundred and fifteen million, “largely due to the proliferation of violent conflicts and climate-related shocks.” In June, 2018, the Food and Agriculture Organization of the U.N. found that child labor, after years of falling, was growing, “driven in part by an increase in conflicts and climate-induced disasters.”

Scientists have warned for decades that climate change would lead to extreme weather. Shortly before the I.P.C.C. report was published, Hurricane Michael, the strongest hurricane ever to hit the Florida Panhandle, inflicted thirty billion dollars’ worth of material damage and killed forty-five people. President Trump, who has argued that global warming is “a total, and very expensive, hoax,” visited Florida to survey the wreckage, but told reporters that the storm had not caused him to rethink his decision to withdraw the U.S. from the Paris climate accords. He expressed no interest in the I.P. C.C. report beyond asking “who drew it.” (The answer is ninety-one researchers from forty countries.) He later claimed that his “natural instinct” for science made him confident that the climate would soon “change back.” A month later, Trump blamed the fires in California on “gross mismanagement of forests.

 ……….As a team of scientists recently pointed out in the journal Nature Climate Change, the physical shifts we’re inflicting on the planet will “extend longer than the entire history of human civilization thus far.”

The poorest and most vulnerable will pay the highest price. But already, even in the most affluent areas, many of us hesitate to walk across a grassy meadow because of the proliferation of ticks bearing Lyme disease which have come with the hot weather; we have found ourselves unable to swim off beaches, because jellyfish, which thrive as warming seas kill off other marine life, have taken over the water.

The planet’s diameter will remain eight thousand miles, and its surface will still cover two hundred million square miles. But the earth, for humans, has begun to shrink, under our feet and in our minds.

Climate change,” like “urban sprawl” or “gun violence,” has become such a familiar term that we tend to read past it. But exactly what we’ve been up to should fill us with awe. During the past two hundred years, we have burned immense quantities of coal and gas and oil—in car motors, basement furnaces, power plants, steel mills—and, as we have done so, carbon atoms have combined with oxygen atoms in the air to produce carbon dioxide. This, along with other gases like methane, has trapped heat that would otherwise have radiated back out to space. ……..

When I say the world has begun to shrink, this is what I mean. Until now, human beings have been spreading, from our beginnings in Africa, out across the globe—slowly at first, and then much faster. But a period of contraction is setting in as we lose parts of the habitable earth. Sometimes our retreat will be hasty and violent; the effort to evacuate the blazing California towns along narrow roads was so chaotic that many people died in their cars. But most of the pullback will be slower, starting along the world’s coastlines. Each year, another twenty-four thousand people abandon Vietnam’s sublimely fertile Mekong Delta as crop fields are polluted with salt. As sea ice melts along the Alaskan coast, there is nothing to protect towns, cities, and native villages from the waves. In Mexico Beach, Florida, which was all but eradicated by Hurricane Michael, a resident told the Washington Post, “The older people can’t rebuild; it’s too late in their lives. Who is going to be left? Who is going to care?” ………

According to a study from the United Kingdom’s National Oceanography Centre last summer, the damage caused by rising sea levels will cost the world as much as fourteen trillion dollars a year by 2100, if the U.N. targets aren’t met. “Like it or not, we will retreat from most of the world’s non-urban shorelines in the not very distant future,” Orrin Pilkey, an expert on sea levels at Duke University, wrote in his book “Retreat from a Rising Sea.” “We can plan now and retreat in a strategic and calculated fashion, or we can worry about it later and retreat in tactical disarray in response to devastating storms. In other words, we can walk away methodically, or we can flee in panic.” ………

some of the world is becoming too hot for humans.  ……….

According to the National Oceanic and Atmospheric Administration, increased heat and humidity have reduced the amount of work people can do outdoors by ten per cent, a figure that is predicted to double by 2050. About a decade ago, Australian and American researchers, setting out to determine the highest survivable so-called “wet-bulb” temperature, concluded that when temperatures passed thirty-five degrees Celsius (ninety-five degrees Fahrenheit) and the humidity was higher than ninety per cent, even in “well-ventilated shaded conditions,” sweating slows down, and humans can survive only “for a few hours, the exact length of time being determined by individual physiology.”

According to the National Oceanic and Atmospheric Administration, increased heat and humidity have reduced the amount of work people can do outdoors by ten per cent, a figure that is predicted to double by 2050. About a decade ago, Australian and American researchers, setting out to determine the highest survivable so-called “wet-bulb” temperature, concluded that when temperatures passed thirty-five degrees Celsius (ninety-five degrees Fahrenheit) and the humidity was higher than ninety per cent, even in “well-ventilated shaded conditions,” sweating slows down, and humans can survive only “for a few hours, the exact length of time being determined by individual physiology.” ………

As some people flee humidity and rising sea levels, others will be forced to relocate in order to find enough water to survive. In late 2017, a study led by Manoj Joshi, of the University of East Anglia, found that, by 2050, if temperatures rise by two degrees a quarter of the earth will experience serious drought and desertification. The early signs are clear: 

………We’ve already overpumped the aquifers that lie beneath most of the world’s breadbaskets …

…….All this has played out more or less as scientists warned, albeit faster. What has defied expectations is the slowness of the response. 

………..Exxon’s behavior is shocking, but not entirely surprising. Philip Morris lied about the effects of cigarette smoking before the government stood up to Big Tobacco. The mystery that historians will have to unravel is what went so wrong in our governance and our culture that we have done, essentially, nothing to stand up to the fossil-fuel industry.

There are undoubtedly myriad intellectual, psychological, and political sources for our inaction, but I cannot help thinking that the influence of Ayn Rand, the Russian émigré novelist, may have played a role. Rand’s disquisitions on the “virtue of selfishness” and unbridled capitalism are admired by many American politicians and economists—Paul Ryan, Tillerson, Mike Pompeo, Andrew Puzder, and Donald Trump, among them.

Trump, who has called “The Fountainhead” his favorite book, said that the novel “relates to business and beauty and life and inner emotions. That book relates to . . . everything.” Long after Rand’s death, in 1982, the libertarian gospel of the novel continues to sway our politics: Government is bad. Solidarity is a trap. Taxes are theft. The Koch brothers, whose enormous fortune derives in large part from the mining and refining of oil and gas, have peddled a similar message, broadening the efforts that Exxon-funded groups like the Global Climate Coalition spearheaded in  the late nineteen eighties…….

Musk, Jeff Bezos, and Richard Branson are among the billionaires who have spent some of their fortunes on space travel—a last-ditch effort to expand the human zone of habitability. In November, 2016, Stephen Hawking gave humanity a deadline of a thousand years to leave Earth. Six months later, he revised the timetable to a century. In June, 2017, he told an audience that “spreading out may be the only thing that saves us from ourselves.” He continued, “Earth is under threat from so many areas that it is difficult for me to be positive.”

But escaping the wreckage is, almost certainly, a fantasy. Even if astronauts did cross the thirty-four million miles to Mars, they’d need to go underground to survive there. To what end? The multimillion-dollar attempts at building a “biosphere” in the Southwestern desert in 1991 ended in abject failure. Kim Stanley Robinson, the author of a trilogy of novels about the colonization of Mars, recently called such projects a “moral hazard.” “People think if we fuck up here on Earth we can always go to Mars or the stars,” he said. “It’s pernicious.”

The dream of interplanetary colonization also distracts us from acknowledging the unbearable beauty of the planet we already inhabit.  …….https://www.newyorker.com/magazine/2018/11/26/how-extreme-weather-is-shrinking-the-planet?mbid=nl_Daily%20111718&CNDID=53818310&utm_source=nl&utm_medium=email&utm_campaign=Daily%20111718&utm_content=&utm_brand=tny&utm_mailing=Daily%20111718&hasha=8c9f4

November 19, 2018 Posted by Christina Macpherson | 2 WORLD, climate change | Leave a comment