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Sloth Fur Is Crawling With Life-Forms That Could Help Us Fight Superbugs

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Earth Is Totally Unprepared For a Surprise Asteroid Strike, NASA Scientists WarnClouds Outside The Solar System Are Made From Ruby And Sapphire MineralsThe Brightest Supernova on Record Was Something Much More Brutal Than an Explosion

Strange Magnetic Stars Could Spawn Some of The Universe's Most Massive Black HolesNASA Now Has Its Own GIF Channel, And It's The Happiest Place on The Web

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Sign of a Mysterious Human Ancestor Has Been Found in Our SpitOur Minds Appear to Sync With Others When We're Holding a Conversation

Spectacular Findings in Australia Push Back Human Settlement by at Least 10,000 YearsHow Maryam Mirzakhani Was a Role Model For More Than Just Her Mathematics