http://gladwell.com/2005/2005_01_15_a_collapse.html Malcolm Gladwell reviews Jared Diamond’s “Collapse.” Apparently, the Norse colonies in Greenland died out because they’d chopped down all the trees, over-farmed the land—and wouldn’t eat fish. (I’ve heard that well-intentioned aid agencies in South-East Asia have had a similar problem: they’ve tried to feed people “broken rice” but even starving people won’t eat it because broken rice is what animals are fed.) 01:20