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Science

The Scientific American guide to 2026’s total solar eclipse

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A drug already used for osteoporosis blocked spinal damage in a new study

Pacific islands alarmed by Trump-backed push for deep-sea mining

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Climate change created conditions for Canada fires, scientists say, as Trump blames mismanagement

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Scientists are certain a wayward SpaceX rocket slammed into the moon as predicted

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Fuego volcano activity that triggered evacuations in Guatemala is decreasing, but risks remain

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Sizing errors can hide true nanoparticle behavior

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How much of our existence do we owe to sugar?

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Forget the sperm race: Fertilization may depend on teamwork

The AMOC stayed strong even as a major ocean “lifeline” nearly shut down

Powerhouses for fake meat: Muscle protein can now be grown in chloroplasts of lettuce and tobacco plants

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Dirty air may trigger painful rheumatoid arthritis flares

THC medication made PTSD nightmares disappear for more than a third of patients

Claude Fable 5 AI finds a tiny formula that topples an 87-year-old math conjecture

567-million-year-old fossils rewrite the dawn of animal life