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15 priceless pet reactions to the new puppy

Strange distant star is dimming, and scientists don't know why

Seattle is topping one of its famous floating bridges with light rail

Fake caterpillars trick ants into spilling secrets

Why California's salmon species are in hot water

Sharks get star treatment in beautiful new photography book

15 hilarious sunscreen fails

Global warming is making Antarctica green again, and it's stunning

What does it take to save an injured sea turtle?

Rare argonaut octopus washes ashore

Pit bull on 'death row' at shelter gets new life as police dog

Someone left 15,000 coins on a London path then filmed people finding them