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Earth''s ancient oceans were rife with nightmare creatures, from manylimbed worms to sixfootlong crabancestors. This week, scientists are taking the prehistoric ...
Syria Meets Deadline for Submitting Destruction Plan for Chemical Weapons. New York Times. October 27, 2013. By NICK CUMMINGBRUCE and MICHAEL R. GORDON
Thousands of years ago, indigenous people living in the California Channel Islands relied on a manufacturing process that exposed them to dangerous chemicals that ...
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Building the Great Cathedrals. How did medieval engineers construct magnificent skyscrapers of glass and stone? Airing December 23, 2015 at 9 pm on PBS ...
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