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Photo of the Day

Hairy blue-and-black tarantula discovered in Guyana rainforest

The U.S. just revealed its recovery plan for Mexican gray wolves

Australian zoo celebrates birth of second black rhino baby

This 1833 'Eagle Map of the United States' soars

Days after oil spill, Nebraska approves Keystone XL pipeline project

Drilling threat looms large for Arctic National Wildlife Refuge

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Photo blog

Winning photos capture awe-inspiring moments of science

Behold the dreamy beauty of Jupiter's clouds

Before the fire: Capturing the beauty of Columbia River Gorge

Small worlds loom large in Nikon's photomicrography contest

Houtong Cat Village: A cat lover's paradise

Canada opens first permanent highway to remote Arctic coast

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Photo galleries

10 Cold War sites you can visit today

10 naturally pink lakes

10 great cities for vegetarian foodies

Obama's national monuments are a big deal

7 less-famous natural history museums worth a visit

10 best national parks for sunrises and sunsets

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