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Photo of the Day

Vatican turns off iconic fountains in sign of water-saving solidarity

Rescuers free a young humpback whale tangled in buoys near Cape Cod

3 new toad species found in Nevada — but one may already be in trouble

In the fight against HIV, cows emerge as powerful secret weapon

Artificial intelligence gives Google Street View a professional touch

Why aren't the biggest animals also the fastest?

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Photo blog

Soar above London along the world's fastest urban zip line

The bride wore rolls and rolls of toilet paper

7 larger-than-life photos that express how much this guy loves his dog

Just because the sun isn't shining, doesn't mean it isn't beautiful outside

Winning images in dog photo contest will capture your heart

Ocean pollution is no laughing matter

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Photo galleries

The incredible shrinking economy seat (and other ways flying has changed)

10 of the world's most colorful cities

9 not-so-big cities with rich cultural scenes

10 scenic highways for your daydreaming pleasure

11 preservation success stories

10 foods and beverages that boost brainpower

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