Zoos

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Polar bear in a zoo.

Pro and Con: Zoos

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How Deadly Is Quicksand?

Aurochs. Bos primigenius. Skeleton. Extinct animal. Skeleton of an Aurochs, an extinct wild ox.

6 Animals We Ate Into Extinction

King Cobra snake in Malaysia. (reptile)

9 of the World’s Deadliest Snakes

Cathedrale St.Jean in Lyon, France has a 14th-century astronomical clock that shows religious feast days till the year 2019; Perpetual Calendar

Ten Days That Vanished: The Switch to the Gregorian Calendar

Figure 13: A Maxim machine gun, belt-fed and water-cooled, operated by German infantrymen, World War I.

7 Deadliest Weapons in History

Drinking water is poured into a glass.

Water Fluoridation: Just the Facts

Zoos: Related Content

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