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video
Ideas for Change
"We too are sea creatures," entreats ocean explorer Sylvia Earle in this beautiful...
Fri, 06/07/2013 - 09:12
video
Whale Rescue
When a critically endangered North Atlantic right whale becomes entangled in...
Fri, 01/14/2011 - 10:50
Lesson Plan
The Puzzle of Ice Age Americans
Students describe alternative theories for arrival of first humans to come to...
Tue, 12/01/2009 - 12:19