How to build a space hotel
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How two mathematicians solved a cryptography mystery
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Readers respond to the January 2026 issue
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May 2026: Science History from 50, 100 and 150 Years Ago
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Math puzzle: A disassembly job
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An asteroid extinguished all the dinosaurs except for birds. Here’s why
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New evidence links heart disease to inflammation—and drugs can stop it
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Science crossword: Hot stuff
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