All Items Tagged

“meteor”

Oct 15, 2013 06:40 AM ET // Larry O'Hanlon
One geologist thinks Earth has been banged up a bit more than previously thought -- never allowing the 'Snowball Earth' global ice age to develop.
Jun 16, 2010 11:40 PM ET // Cristen Conger
Crater formation is a a mysterious science, and one we won't get a good handle on until man returns to the pripristine craters of thelunar landscape.