Animals may have been transported on Viking ships across the Baltic Sea

High-fat, low-carb regimen stresses out cells in heart, kidneys, brain, and liver, but effects may be reversible

A brilliant mathematician who made billions on Wall Street, Simons gave heavily to basic science and higher education

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Rocks and other objects allow the marine mammals to eat tougher prey without damaging their teeth—and females benefit most

The discovery of rogue antibodies behind paranoia, hallucinations, and other symptoms could bring a “paradigm shift” to psychiatry