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Time Team America's master backhoe operator shows off the skills and technique he uses when clearing archaeology trenches. Time Team America is a new science and archaeology series from PBS. In each... 01:18
Dr. Sri Sritharan is the Associate Chair for Graduate Study & Research and Wilson Engineering Professor at Iowa State University. He explained to what extent Japan’s buildings, or nuclear... 14:00
Author and naturalist, Cindy Blobaum, teaches students about minerals - the ingredients for rocks. This video is targeted at students in grades 3-6. 02:42
Author and naturalist, Cindy Blobaum, introduces the concept of the geology field. This video is targeted at students in grades 3-6. 00:54
Full Program: How can we best prepare for the most lethal volcanic eruptions? 52:46