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Sketches of the World: Exploring Transportation

Related Article: Learn more about geography.

This clip introduces the dynamics of traveling in several different countries around the world.

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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.

Visit Berlin (6:34)

Watch this "City by City" video before you visit Berlin. Explore the thriving cultural epicenter of Germany. Video courtesy of City by City from ON Networks.

Assignment Discovery: Sub Saharan of Africa (1:02)

Take a tour of Africa and see the land, the people and the culture. Learn more about Africa and its Sahara in Discovery Channel's "Assignment Discovery."

Brazil: Boom Town in Brazil (2:16)

With population growing everyday, Sao Paulo has become one of the top five populated cities in the world.

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.

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10 Ways the World Will End: The Big Freeze (2:34)

The Science Channel's "10 Ways the World Will End," explains how global warming could trigger a new ice age, which would destroy all life as we know it.

Planet's Best Safaris: Tanzania Tribe Herd (1:35)

Learn about the ancient tribes of Masai and how they herd their cattle among the wildlife without disturbing the natural habitat, in this clip from "Planet's Best Safaris" on Animal Planet.

100 Greatest Discoveries: Yellowstone's Volcano (0:49)

The majority of Yellowstone Park is on top of an underground volcano that is 40 miles wide. Learn more about the underground volcano on The Science Channel's "100 Greatest Discvoeries."

100 Greatest Discoveries: The Mid Atlantic Ridge (0:57)

On The Science Channel's "100 Greatest Discoveries," learn about the discovery of a Mid-Atlantic Ridge -- a 12,000 mile long mountain range underneath the Atlantic Ocean.

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."