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Caught in the Moment: Marine Life on the Cocos Islands (0:57)

Vanessa Garnick and Tristan Bayer from Animal Planet's "Caught in the Moment" describe the Cocos Island and the marine life there.

Caught in the Moment: Nosy Ve Island (1:55)

Tristan Bayer and Vanessa Garnick from Animal Planet's "Caught in the Moment" visit Madagascar and the Nosy Ve Island off its coast, where people cannot live, only visit.

Caught in the Moment: Madagascar Habitat (1:15)

Tristan and Vanessa from Animal Planet's "Caught in the Moment" describe the wildlife and vegetation of Madagascar. Learn more in this clip.

Caught in the Moment: Life in Madagascar (1:44)

Tristan Bayer and Vanessa Garnick from Animal Planet's "Caught in the Moment," visit Madagascar and learn about the lifestyle of the locals.

100 Greatest Discoveries: Periodic Ice Age (1:43)

What could cause an ice age? Find out as Milton Milankovitch's calculations of the Earth's orbit and angle of axis is examined on The Science Channel's "100 Greatest Discoveries."

100 Greatest Discoveries: Sea Floor Spreading (1:11)

One of the dynamic principles of geology is explained with Harry Hess' discovery that the sea floor was spreading and the concept of subduction. Learn more about sea floor spreading on The Science Channel's "100 Greatest Discoveries."

100 Greatest Discoveries: Continental Drift (2:12)

Groundbreaking research by Alfred Wegener reveals that all the continents were once connected as one single land mass he called Pangaea. Learn more about Wegener's continental drift theory on The Science's Channel's "100 Greatest Discoveries."

What the Ancients Knew: Parthenon Design (2:59)

Everything isn't as it seems when exploring Ancient Greek architecture. Found out why as Jack Turner, host of the Science Channel's "What the Ancients Knew," visits the Parthenon.

Planet's Best: Yellowstone National Park (2:59)

On Animal Planet's "Planet's Best: North American Wildlife Encounters," get a brief overview of Yellowstone National Park and the amazing wildlife there.

Planet's Best: Wildlife at Yellowstone National Park (2:55)

On Animal Planet's "Planet's Best: North American Wildlife Encounters," get to know the wildlife that live in Yellowstone National Park. Wolves, elk and bison live together in a magnificent ecosystem.