In this video excerpt from NOVA, follow biologist Tim Shank as he explores the deep Arctic Ocean, which may be similar to the ocean on one of Jupiter's moons called Europa. Robots sent to the ocean floor discover a hostile environment that is home to new forms of life that use sulfur, hydrogen, and methane as chemical sources of energy. In activity four from the Education Collection that accompanies this video, students match a microbe to an extreme environment in which it could live using cards that show extremophiles and some of Earth’s extreme environments.
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