10 Scariest Asteroid Attacks on Earth: The Near Hits and Approaching…

When it comes to comet impacts, the denizens of Earth may be living on borrowed time. Of course, comets are only about half the problem — there are plenty of asteroids whizzing around the inner solar system too — so we decided to have a look and see just how close modern society has come to destruction since 1900,… » 6/20/08 12:20pm 6/20/08 12:20pm