bad things happen

"If you're close to the site of a major [asteroid] impact, some pretty bad things happen," said Jay Melosh, an expert in impact cratering at the University of Arizona.

from Catastrophe Calculator: Estimate Asteroid Impact Effects Online

I started by dropping a 9.3-mile-wide (15-kilometer) asteroid -- the estimated size of the suspected dinosaur killer -- on San Francisco.

The Bay Area doesn't do so well.

( Read more... )

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