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Trovants, found only in a small town in Romania, are stones that actually seem to move and grow. But are they alive?

Extremophiles are organisms that live in "extreme" environments. Learn why extremophiles are remarkable, not only because of their habitats.

Kodiak bears are some of the largest bears in the world and live only in the islands of the Kodiak Archipelago in Alaska.

Copyrights are the one of the only forms of intellectual property that have historical basis in the Constitution. Learn how they work.

Nitrates are found not only in processed meats, but also naturally occur in green vegetables as well. So, are they dangerous?

Cottonmouth snakes are often called water moccasins and are one of only four venomous snakes found in North America.

Wingspan isn't the only way to measure the largest eagles in the world. We also looked at weight and height.

Natural selection is the idea that organisms that are best suited to survive pass their traits down. Is it true that only the strong survive?

Mildred Harnack was the only American in the leadership of German resistance to Hitler. And Hitler personally ordered her executed for it.

Movies like '300' have popularized the image of ancient Spartans as super-warriors. But that's only part of the story

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