It Could Happen Again
But in a different way this time – Here’s another cataclysm that wiped out much of the life on earth in the past: multiple impacts from comets and asteroids sent up dust that blocked out sunlight, causing a major food shortage. Could this happen today? NASA is trying to make sure it doesn’t by spotting asteroids BEFORE they strike. But it might not take a space rock to cause famine toda–climate change might do it instead, n HALF of the world, anyway.
Astronomers all over the world now are trying to make sure this never happens again. NASA admits they haven’t always done this: in BBC News, Laurence Peter quotes Don Yeomans as saying, "It’s getting much more predictable. Before 1998 we hadn’t found many and didn’t do much follow-up."
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