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2:34
Gross science: This parasite crawls into a fish’s mouth and replaces its tongue.
1:23
Tom and Ray test the waters of Iceland's Blue Lagoon while filming "Car of the Future."
2:37
Senior Executive Producer Paula Apsell describes the decision to make "Judgment Day."
2:01
These NSA spy gadgets were leaked. What would you do if someone used them to spy on you?
2:44
Meet Helheim, a glacier in Greenland of exquisite beauty at every scale.
6:12
Joe Davis is a one-of-a-kind individual sailing uncharted waters between art and science.
4:24
Knowing the addresses of a thousand galaxies yielded a remarkable picture of our universe.
