Tag: national geographic

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National Geographic Documentary - Monster Crocodile A crocodile is a large amphibious reptile. It lives mostly in large tropical rivers, where it is an...

How fast can we run a marathon? It’s a question that has challenged us for thousands of years, and now scientists are working with...

National Geographic Documentary Megastructures Super Sub USS Submarines Ultimate Structures - BBC Documentary History Nazi Megastructure USS ( United States Ship ), typically as a...