Fallout without fallout In the years after World War II, Britain — desperate to gain the atomic bomb, and despite the “special relationship” not likely to get the secrets of how to build it from the U.S. — built a plutonium-enrichment plant at Windscale, on the edges of the beautiful Lake District national park. But they didn’t really know what they were doing, and the resulting facility caught fire and spread radioactive graphite ash across the countryside. Jack Devanney, a nuclear engineer, notes something unusual about this event: The lack of panic. The plant’s management, which, he says, had a good relationship with local communities, kept them closely informed. Nearby milk production was condemned and farmers compensated, but no one was evacuated. The rest of the Windscale plant continued operating. And — even though the release was far larger than that at Three Mile Island, which led to a declaration of emergency and partial evacuation — later studies found no health impacts from the incident. “It is possible to have a release,” writes Devanney, “without a panic.” On demand It’s received wisdom that building more roads doesn’t ease congestion: It simply encourages more people to drive. “One more lane should fix it,” the caption on one meme says, over a picture of 18 gridlocked lanes on a freeway. This concept is called “induced demand” — the more you provide something, the more people want it, so there’s no point providing more of it. But that idea is flat wrong, says the economist Ben Southwood. Instead what there is is suppressed demand: More people want to do the thing than are currently able to, and providing more of it will mean more people can. With any other good, this would be obvious, he says. If people in Soviet Russia were queuing for hours to get enough bread to meet 50% of their calorie needs, and then enough bread was provided to meet 60%, the queues wouldn’t get shorter. But it would still be an improvement. There are reasons not to build more roads — “Car traffic is noisy, it pollutes, it’s space-hungry, and it can be dangerous,” says Southwood — but they do let people get from place to place, and the idea of “induced demand” is fake. Seeing the forest for the trees Ten thousand years ago, 57% of land was covered in forest. By 1900, that had fallen to 48%; now, it’s 38%. Stephen Clare, an environmental scientist, was driven by those startling numbers to study deforestation and sustainable forest practices. But his research led him to a surprising, and heartening, discovery. “My belief that forests were doomed to devastation so long as globalization, industrialization, and population growth continued was too simplistic,” he writes. Net forest loss peaked in the 1980s. The annual rate is half what it was then, and in many countries it has reversed: Forests are growing back. It’s especially true in developed nations, but poorer ones are increasingly reforesting too. The process of going from deforestation to reforestation is called the “forest transition.” Most countries around the world are undergoing it. “Without slipping into complacency,” says Clare, “we should recognize that the fight against deforestation is one we’re winning.” |