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Bumble bee to receive helping hand from Endangered Species Act

How cougars can help save human lives

How Costa Rica's tapirs are key to carbon storage

Who should enjoy Rome's famed Spanish Steps?

It isn't easy being a red wolf

6 amazing facts about strange and beautiful cuttlefish

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Photo blog

Why the biggest dinosaurs had the flashiest head gear

Why do leaves change color in autumn?

A living cathedral of trees is slowly growing in Italy

Planning a wedding? Skip the flowers and get puppy bouquets instead

Planet or not, you can't discount the extraordinary beauty of Pluto

Why is the sky so blue in autumn?

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Photo galleries

7 of the world's steepest streets

8 species moving to cooler waters

7 of the best World War I sites you can visit

10 of the scariest animal mouths out there

15 fascinating facts about otters

7 of the best running trails in America

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