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Science -- Earth science
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Caves: Extreme Conditions for Life
This video segment, adapted from a NOVA broadcast, discusses the extreme environments that caves present for living organisms, and the unique strategies for survival adopted by communities of cave-dwelling microbes that...
EarthScope: Earthquake in Tonga
This bulletin discusses the magnitude 7.9 earthquake that shook the islands of Tonga in May 2006. Topics include the tectonic setting of the islands, at the boundary of the Pacific and Australian plates, the frequent...
Antarctica: Sea Ice
This video segment, adapted from a NOVA broadcast, shows how sea ice forms in the Southern Ocean around Antarctica and how its seasonal fluctuation dramatically changes the continent. The segment, two minutes...
Topographic maps that display three-dimensional landscapes on two-dimensional surfaces can offer a great deal of spatial information in minimal space. However, it is often difficult for people to interpret the features...
What Happens When an Oil Spill Occurs?
Large oil spills are not a common occurrence. When a tanker runs aground or collides with another vessel and releases its cargo to the sea, it's often major news, especially if the spill is near land. The images in this...
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