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Scientists fire up a laser to spur tooth stem cells into repair mode
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Parasitic wasp uses zinc-tipped ovipositor to drill into fruits. Scientists stunned by discovery
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Unusual NASA experiment will offer insight into how space travel affects twins
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DARPA developing therapies, brain stimulation devices to help soldiers with PTSD
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Supersonic, super simple spray for graphene making
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Feeling cynical? You just may be losing your mind, literally
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Heroin users are white, wealthy and living in the suburbs
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Antarctic ice sheet feels the heat of global warming: Expect sea levels to significantly rise
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NASA screams 'fake' to viral CNN report that giant asteroid will collide with Earth
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Zebras now hold record of longest migration of African land mammals
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CO2 level in Northern Hemisphere hits record high 400 ppm: 'Time is running out,' warns UN
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Oversized human brain explains evolution of our weak muscles: Brain wins over brawn
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