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Peptide-based substances are largely unproven and risky, experts say, but they’re gaining popularity among influencers and athletes—and the U.S. secretary of health


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When their queen dies, naked mole rat females usually wage bloody battles of succession. But peace may be possible, a new study suggests


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If the U.S. is ever to set up a permanent outpost on the moon, it will need nuclear power. The White House just released a road map to get it as soon as 2028


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Do declining immune systems explain the trend, or is something else going on? Experts explain


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Laying eggs may have helped mammal ancestors thrive after Earth’s worst mass extinction


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