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How Do the Chemicals in Sunscreen Protect Your Skin?
July 03, 2017 | ArticleEnergy from the sun's rays can cause skin damage and cancers. Sunscreens can absorb or reflect the dangerous UV light. Here's everything you need to know to read the labels in the sunscreen aisle.
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Do Smokers' Lungs Heal After They Quit?
June 30, 2017 | ArticleAfter a person quits smoking, the lungs can heal to a certain extent.
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Do Giraffes Get Struck by Lightning More Than Other Animals?
June 25, 2017 | ArticleThey can reach 19 feet tall, meaning giraffes tower over the savannah they live in. So do they get struck by lightning more than other, shorter animals?
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The Missing Link: Where Are Medium-Size Black Holes?
June 24, 2017 | ArticleFor decades, while astronomers have detected black holes equal in mass either to a few suns or to millions of suns, the missing-link black holes in between have eluded discovery.
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Why Do Some Animals Eat Their Own Poop?
June 24, 2017 | ArticleWhy do some animals poop, and then turn around and eat their own droppings?
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Why Do Men Have Nipples?
June 17, 2017 | ArticleMen can't nurse babies, so why on Earth do they have nipples?
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Why Do Cats and Dogs Love a Good Head Scratch?
June 17, 2017 | ArticleWhy do some cats and dogs practically melt with joy when they get a good head scratch?
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Are Flat-Earthers Being Serious?
May 30, 2017 | ArticleMembers of the Flat Earth Society claim to believe the Earth is flat. Are they kidding?
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Why Do Men Run Faster Than Women?
May 27, 2017 | ArticleWhy is it that male runners tend to clock faster times than female runners do?
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Could Humans Ever Regenerate a Limb?
May 22, 2017 | ArticleIf you cut the leg off a salamander, it grows back. Humans, however, can't manage the trick. The reasons are far from simple, and to some extent are still a bit of a mystery.
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