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 Editorials | Environmental | January 2005 
The Ends of the World as We Know Them
 Jared Diamond
Jared Diamond, who won the 1998 Pulitzer Prize in general nonfiction for "Guns, Germs and Steel: The Fates of Human Societies," is the author of the forthcoming "Collapse: How Societies Choose or Fail to Succeed."
 (Page 3 of 4)
There is a similar story from Iceland. When the island was first settled by the Norse around 870, its light volcanic soils presented colonists with unfamiliar challenges. They proceeded to cut down trees and stock sheep as if they were still in Norway, with its robust soils. Significant erosion ensued, carrying half of Iceland's topsoil into the ocean within a century or two. Icelanders became the poorest people in Europe. But they gradually learned from their mistakes, over time instituting stocking limits on sheep and other strict controls, and establishing an entire government department charged with landscape management. Today, Iceland boasts the sixth-highest per-capita income in the world.
What lessons can we draw from history? The most straightforward: take environmental problems seriously. They destroyed societies in the past, and they are even more likely to do so now. If 6,000 Polynesians with stone tools were able to destroy Mangareva Island, consider what six billion people with metal tools and bulldozers are doing today. Moreover, while the Maya collapse affected just a few neighboring societies in Central America, globalization now means that any society's problems have the potential to affect anyone else. Just think how crises in Somalia, Afghanistan and Iraq have shaped the United States today.
Other lessons involve failures of group decision-making. There are many reasons why past societies made bad decisions, and thereby failed to solve or even to perceive the problems that would eventually destroy them. One reason involves conflicts of interest, whereby one group within a society (for instance, the pig farmers who caused the worst erosion in medieval Greenland and Iceland) can profit by engaging in practices that damage the rest of society. Another is the pursuit of short-term gains at the expense of long-term survival, as when fishermen overfish the stocks on which their livelihoods ultimately depend.
History also teaches us two deeper lessons about what separates successful societies from those heading toward failure. A society contains a built-in blueprint for failure if the elite insulates itself from the consequences of its actions. That's why Maya kings, Norse Greenlanders and Easter Island chiefs made choices that eventually undermined their societies. They themselves did not begin to feel deprived until they had irreversibly destroyed their landscape.
Could this happen in the United States? It's a thought that often occurs to me here in Los Angeles, when I drive by gated communities, guarded by private security patrols, and filled with people who drink bottled water, depend on private pensions, and send their children to private schools. By doing these things, they lose the motivation to support the police force, the municipal water supply, Social Security and public schools. If conditions deteriorate too much for poorer people, gates will not keep the rioters out. Rioters eventually burned the palaces of Maya kings and tore down the statues of Easter Island chiefs; they have also already threatened wealthy districts in Los Angeles twice in recent decades.
In contrast, the elite in 17th-century Japan, as in modern Scandinavia and the Netherlands, could not ignore or insulate themselves from broad societal problems. For instance, the Dutch upper class for hundreds of years has been unable to insulate itself from the Netherlands' water management problems for a simple reason: the rich live in the same drained lands below sea level as the poor. If the dikes and pumps keeping out the sea fail, the well-off Dutch know that they will drown along with everybody else, which is precisely what happened during the floods of 1953.
The other deep lesson involves a willingness to re-examine long-held core values, when conditions change and those values no longer make sense. The medieval Greenland Norse lacked such a willingness: they continued to view themselves as transplanted Norwegian pastoralists, and to despise the Inuit as pagan hunters, even after Norway stopped sending trading ships and the climate had grown too cold for a pastoral existence. They died off as a result, leaving Greenland to the Inuit. On the other hand, the British in the 1950's faced up to the need for a painful reappraisal of their former status as rulers of a world empire set apart from Europe. They are now finding a different avenue to wealth and power, as part of a united Europe.
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