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Your atoms, and the atoms inside the family dog or the tree growing outside, came from the stars. This is old news to scientists, but it’s also somewhat hazy: when exactly those...
By the end of the 1920s, scientists already knew that tobacco smoke contained a small encyclopedia’s worth of risky chemical compounds: carbon monoxide and hydrogen cyanide, hydrogen...
The Amazing Spider-Man, which retells the origins of Marvel’s wall-crawling superhero, hits theaters Tuesday. In the comic, a bite from a radioactive spider gives Peter Parker...