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The Ancient Greeks concluded Earth was a sphere, which has been validated 由 scientists ever since. Despite this, there is a movement growing claiming the Earth is flat.

Socotra, which is governed 由 Yemen, has been called the “Galapagos of the Indian Ocean” due to the large number of plant and animal species that live only there. Perhaps the most iconic being the dragon’s blood tree.

It’s a life of extremes for Antarctic 毛皮 seals. Bulls fight to the death for breeding rights, while 密封 moms work to raise their adorable pups

Hurricanes are the most powerful storms known to man. Find out when hurricane season peaks, how the storms form, and the surprising role they play in the larger global ecosystem.

The carrier 螃蟹 puts other sea creatures on its back to deter predators.

Sharks among the oldest creatures on Earth and they continue to change and evolve over time. Could sharks like the Epaulet 鲨鱼 be the first of many sharks to acquire the ability to walk on land?

As the planet dries up, access to water has become not only a powerful lifeline, but also a dangerous weapon of war.

A 鲨鱼 expert in Australia tests an electro magnetic device that could be attached to a surf board that may reduce the chances of someone being attacked 由 a shark.

Ricko Dewilde and his son make a camp along the river in preparation for moose hunting season.

Bobby 识骨寻踪 travels to Texas to learn how structures are destroyed 由 demolition crews. In this challenge he learns 更多 about selective demolition which requires parts of a structure to be destroyed 或者 removed instead of the whole structure.