Has Earth finally and permanently outstripped the planet's ability to support us?
Investor Jeremy Grantham of GMO recently published a startlingly depressing outlook for the future of humanity. Grantham thinks the number of people on Earth has finally and permanently outstripped the planet's ability to support us.
Grantham believes that the planet can only sustainably support about 1.5 billion humans, versus the 7 billion on Earth right now (heading to 10-12 billion).
Basically, Grantham thinks most of us are going to starve to death. Why?
In part because we're churning through a finite supply of something that is critical to our ability to produce food: Phosphorus.
Phosphorus is a critical ingredient of fertilizer, and there is a finite supply of it. The consensus is that we will hit "peak phosphorus" production within a few decades, after which point our phosphorus supply will inexorably decline. As it declines, we will be unable to feed ourselves. And you know the rest.
Of course, ever since Malthus, a steady stream of doomsayers have predicted a ghastly end to the human population explosion--and, so far, they've all been wrong.
So why is a man of Grantham's intelligence adding his voice to this chorus?And how real is this threat? Are we all going to starve?
Humans have been around for a while. But for most of our existence, our population was small and stable. Then it exploded.
Most of this explosion has come in the past 200 years--just as Malthus predicted. What Malthus did not foresee was the discovery of oil, commercial fertilizer, and other resources, which have (temporarily) supported this population explosion.
Take oil, for example. Oil traded at about $16 a barrel for a century. Then, as demand outstripped supply, the "normal" price increased to ~$35 a barrel. Now, Grantham thinks "normal" is about ~$75 a barrel
Over the past century, the world has produced ever more food from the same (relatively) finite supply of arable land. For example, this chart shows global wheat production in the past 50 years. The blue line is farmland. The yellow line is total wheat production. The pink line is "yield per hectare." Production is rising because yield is increasing.
In the past half-century, we have used an ever-increasing amount of fertilizer. Not just in total, but per acre. This chart, for example, shows the number of tons of fertilizer used per square kilometer of farmland.
And this leads us to the first problem. 40 years ago, the average growth rate of crop yields per acre was an impressive 3.5% per year. This was comfortably ahead of the growth rate of global population. In recent years, however, the growth in crop yields per acre has dropped to about 1.5%. That's dangerously close to the growth of population.
Phosphorus (P) is essential for life. Plants absorb it from fertilized soil, and then animals absorb it when they eat plants (and each other). When the plants and animals excrete waste or die, the phosphorus returns to the environment. Eventually, given enough time, it gets compressed into rock at the bottom of the ocean.
Phosphate is a critical ingredient of fertilizer, and there is no substitute for it (because plants are partially made from it). This photo shows the difference between corn fertilized with phosphorus (background) and corn without.
The trouble is that there isn't an infinite amount of phosphate rock. Estimates differ on the amount of reserves available in the world, but they're not unlimited. Some scientists think we have enough to last hundreds of years. Others, however, are far less optimistic.
Not necessarily. It turns out that our urine and feces contain a lot of phosphorus--which is why they make good fertilizer. If we got serious about recycling our bio-waste, we could reduce our need for phosphate rock.
But although conservation and recycling will help, they won't fix the problem. Because a huge amount of phosphorus will still be lost to runoff. Phosphate that isn't consumed by plants leaches out of the soil into rivers and then to the ocean.
So, why is all this happening now, when the global population has been exploding for two centuries? The answer, in part, is the spectacular growth of China, India, and other massive countries. The resource-usage of these countries is mind-boggling. Here, for example, are Grantham's estimates of the percentage of world consumption of various resources that are consumed by China alone.
Common sense will tell you that finite resources can't support infinite growth. And another look at the "growth curve" of human population shows why it might be silly to dismiss Malthus, et al, as "obviously wrong." (Maybe they were just early).
Paul faced danger, Ani and Ray faced each other, and Frank faced some career decisions.
This is what happens when you devote two-thirds of a season to scene after scene after scene of Frank and Jordan’s Baby Problems, and Frank Shaking Guys Down, and Look How Fucked Up Ray and Ani Are, and Melancholy Singer in the Dive Bar Yet Again—and then you suddenly realize that with only a couple episodes left you haven’t offered even a rudimentary outline of the central plot.
The winners of the 27th annual National Geographic Traveler Photo Contest have just been announced.
The winners of the 27th annual National Geographic Traveler Photo Contest have just been announced. Winning first prize, Anuar Patjane Floriuk of Tehuacán, Mexico, will receive an eight-day photo expedition for two to Costa Rica and the Panama Canal for a photograph of divers swimming near a humpback whale off the western coast of Mexico. Here, National Geographic has shared all of this year’s winners, gathered from four categories: Travel Portraits, Outdoor Scenes, Sense of Place, and Spontaneous Moments. Captions by the photographers.
What if Joe Biden is going to run for the Democratic nomination after all?
Most Democrats seem ready for Hillary Clinton—or at least appear content with her candidacy. But what about the ones who who were bidin’ for Biden? There are new signs the vice president might consider running for president after all.
Biden has given little indication he was exploring a run: There’s no super PAC, no cultivation of a network of fundraisers or grassroots organizers, few visits to early-primary states. While his boss hasn’t endorsed Clinton—and says he won’t endorse in the primary—many members of the Obama administration have gone to work for Clinton, including some close to Biden.
But Biden also hasn’t given any clear indication that he isn’t running, and a column by Maureen Dowd in Saturday’s New York Times has set off new speculation. One reason Biden didn’t get into the race was that his son Beau was dying of cancer, and the vice president was focused on being with his son. But before he died in May, Dowd reported, Beau Biden tried to get his father to promise to run. Now Joe Biden is considering the idea.
Put simply: Climate change poses the threat of global catastrophe. The planet isn’t just getting hotter, it’s destabilizing. Entire ecosystems are at risk. The future of humanity is at stake.
Scientists warn that extreme weather will get worse and huge swaths of coastal cities will be submerged by ever-more-acidic oceans. All of which raises a question: If climate change continues at this pace, is anywhere going to be safe?
“Switzerland would be a good guess,” said James Hansen, the director of climate science at Columbia University’s Earth Institute. Hansen’s latest climate study warns that climate change is actually happening faster than computer models previously predicted. He and more than a dozen co-authors found that sea levels could rise at least 10 feet in the next 50 years. Slatepoints out that although the study isn’t yet peer-reviewed, Hansen is “known for being alarmist and also right.”
Even when they’re adopted, the children of the wealthy grow up to be just as well-off as their parents.
Lately, it seems that every new study about social mobility further corrodes the story Americans tell themselves about meritocracy; each one provides more evidence that comfortable lives are reserved for the winners of what sociologists call the birth lottery. But, recently, there have been suggestions that the birth lottery’s outcomes can be manipulated even after the fluttering ping-pong balls of inequality have been drawn.
What appears to matter—a lot—is environment, and that’s something that can be controlled. For example, one study out of Harvard found that moving poor families into better neighborhoods greatly increased the chances that children would escape poverty when they grew up.
While it’s well documentedthat the children of the wealthy tend to grow up to be wealthy, researchers are still at work on how and why that happens. Perhaps they grow up to be rich because they genetically inherit certain skills and preferences, such as a tendency to tuck away money into savings. Or perhaps it’s mostly because wealthier parents invest more in their children’s education and help them get well-paid jobs. Is it more nature, or more nurture?
A new EPA rule is designed to withstand legal challenges from Republicans while convincing world leaders to follow suit.
President Obama’s plan to reduce greenhouse-gas emissions is aimed at three major constituencies. First, there’s the plan’s immediate goal: significant decreases in the emissions in the U.S. between now and 2030. Second, the rule arrives as the world gears up for global emissions talks in Paris in December, and American action is seen as necessary to convince other countries to act. And third, Obama views the fight against climate change as an essential part of his legacy, alongside the Affordable Care Act.
“We’re the first generation to feel the impact of climate change, and the last generation that can do something about it,” Obama said at a press conference at the White House on Monday, repeating a line he’s used before. The president emphasized the moral case for reducing emissions throughout the speech, invoking Pope Francis’s call for action, and scolding “cynical” critics who charged his plan would hurt minorities and the poor. “If you care about low-income minority communities, start protecting the air they breathe and stop trying to rob them of their health care.”
And last year, Ypsilanti, Michigan, got a brief flare-up of Internet fame whenGawker reported on a scatological scofflaw who had been repeatedly pooping on local playground slides. A city-council member told MLive the acts were “weird and deliberate.” The manhunt launched a hashtag (#YpsiPooper), and an advertising company put up messages on a billboard it owned over the highway, urging residents to say something if they saw something: "Help us flush the pooper,” “Do your civic doody, report the pooper,” and “Help us catch the poopetrator.” The culprit—a resident of a nearby halfway house—was eventually identified and warned, which seemed to do the trick.
For physicians who treat sick children, professional “masks,” such as white coats and detached demeanors, can be both a help and a hindrance.
Nancy Hutton, an associate professor at the medical school of Johns Hopkins University, has one of the hardest jobs in medicine: She specializes in pediatric hospice and palliative care. She sees the sickest children—the ones with severe neurological problems that cause profound developmental delays, or with cancers slowly ravaging their bodies, or severe organ failures.
The worst, though, is when she doesn’t know exactly what’s wrong with a child. “That's even harder,” she said. “When you can't give something a name.”
Sometimes her job is to keep her patients comfortable: helping them keep food down without vomiting or easing their physical pain.
But other times, the child is dying. In those cases, it falls on Hutton to counsel the family.
Two hundred fifty years of slavery. Ninety years of Jim Crow. Sixty years of separate but equal. Thirty-five years of racist housing policy. Until we reckon with our compounding moral debts, America will never be whole.
And if thy brother, a Hebrew man, or a Hebrew woman, be sold unto thee, and serve thee six years; then in the seventh year thou shalt let him go free from thee. And when thou sendest him out free from thee, thou shalt not let him go away empty: thou shalt furnish him liberally out of thy flock, and out of thy floor, and out of thy winepress: of that wherewith the LORD thy God hath blessed thee thou shalt give unto him. And thou shalt remember that thou wast a bondman in the land of Egypt, and the LORD thy God redeemed thee: therefore I command thee this thing today.
— Deuteronomy 15: 12–15
Besides the crime which consists in violating the law, and varying from the right rule of reason, whereby a man so far becomes degenerate, and declares himself to quit the principles of human nature, and to be a noxious creature, there is commonly injury done to some person or other, and some other man receives damage by his transgression: in which case he who hath received any damage, has, besides the right of punishment common to him with other men, a particular right to seek reparation.
California Representative Adam Schiff, the ranking Democrat on the House Intelligence Committee, has decided to come out in favor of the nuclear agreement.
Earlier this year, California Representative Adam Schiff, the ranking Democrat on the House Intelligence Committee, told me he had serious doubts about Iran’s intentions as it pursued a nuclear deal with the United States and five other world powers. He also said he was somewhat worried about the scale of possible American concessions during the talks. Schiff, who I described in a post at the time as a “moderate’s moderate,” suggested to me that he wanted to see President Obama achieve an important foreign-policy success, but as a Jew, he wanted to make sure that an anti-Semitic regime—both he and Obama agree that Iran is ruled by an anti-Semite—would not be allowed to become a nuclear-weapons state. At the time, he told me he was “uncommitted” and that he would “remain uncommitted” until he had time to review a final deal, should a final deal materialize.