Asteroid anniversary recalls Earth's rocky history ...
USA Today: 3 views since Sunday, June 29, 2008 at 10:10 PM
Summertime a time for sunny days, beach weekends and of course, leisurely reflections on the end of the world and the monster asteroids that could smack into us. The centennial anniversary of the last big impact, the 1908 Tunguska blast that rocked Siberia, falls Monday, June 30, bringing with it a reminder of the very slight chance that a hunk of space rock out there might have Earth's number.

Published in: Journals