All Items Tagged

“snowball earth”

Jan 28, 2014 10:00 AM ET // Becky Oskin, LiveScience
Snow sculpted into fanciful shapes such as doughnuts and hollow tubes appear overnight.
Dec 17, 2013 02:20 PM ET // Charles Choi, LiveScience
A global ice age that lasted more than 50 million years may have been triggered by volcanic rocks trapping carbon dioxide.
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.
Jul 26, 2013 09:57 AM ET // Larry O'Hanlon
Sea level is rising today, but a long, long time ago sea levels dropped to alarming, but hard to pinpoint, levels. Researchers have a new estimate of how low seas can go. Continue reading →
Oct 13, 2011 03:54 AM ET // Tim Wall
Tectonic rifting between continents may have provided liquid shelters for life during otherwise frozen times.