Taking an Ice Sample
Using a drill, a team removes a chunk from the thick Arctic ice. Small samples are...
Mon, 01/10/2011 - 11:55
You may have seen the sparkle of fireflies on a summer’s night. The fireflies...
Students compare and contrast the various methods (chemiluminescence,...
Mon, 11/30/2009 - 18:57
Microscopic, single-celled organisms called foraminifera have a fossil record that...
Thu, 03/25/2010 - 16:23