Russian asteroid explosion and past impactors paint a potentially grim future for Earth
Friday, March 8, 2013 - 11:00
in Paleontology & Archaeology
The recent meteor explosion over Chelyabinsk brought to the forefront a topic that has worried astronomers for years, namely that an impactor from space could cause widespread human fatalities. Indeed, the thousand+ injured recently in Russia was a wake-up call. Should humanity be worried about impactors? "Hell yes!" replied astronomer Neil deGrasse Tyson to CNN's F. Zakharia .