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Scientific American

Is testosterone therapy safe and effective? What we know

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The mangled remains of probes sent to Venus may still be there

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Celebrate Mother’s Day with nine bold, beautiful and bizarre animal moms

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This organoid can menstruate—and shows how tissue can repair itself

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Top climate research center at risk of cuts sues Trump administration

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The leader of NASA’s Psyche mission has tips for interplanetary team building

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Wildfire breaks out inside Chernobyl exclusion zone

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See the Pentagon’s new UFO image release

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AI’s Power Needs Will Destroy the Renewable Energy Revolution

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U.S. neutrino megaproject takes shape in abandoned gold mine

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Pentagon releases trove of new UFO files, but skeptics aren’t impressed

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There is no vaccine for deadly hantavirus, but this scientist is working on one

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Scientists make AI play Battleship to help it do science better

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Is Pluto a planet? That’s asking the wrong question

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The science behind social media’s peptide obsession

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David Attenborough celebrates his 100th birthday

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Trump administration cut funding to study hantavirus, the virus behind deadly cruise ship outbreak

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Slower biological aging may tied to getting the same amount of rest each day

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Shake it off—NASA’s Curiosity rover gets its robotic arm stuck inside a rock on Mars

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Poop, stomach oil and ostrich eggshells keep records of Earth’s ancient climate

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Skeletons of four doomed Franklin Expedition sailors identified with DNA

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