Arthur Allen explores how two European scientists produced typhus vaccines during World War II.
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Brazil nut effect may explain why only large boulders dot surfaces of asteroids.
Paleontologists can dig into fossils without destroying them and see what’s inside using 3-D scanning. What they’re learning helps bring the past to life.
Antibiotic stewardship requires education, diligence, and changes in prescribing. At some hospitals, it’s beginning to halt a dangerous trend.