Science history: Carbon-14 is discovered, opening a window into past civilizations — Feb. 27, 1940
Milestone: Black hole radiation theorized Date: March 1, 1974 Where: Cambridge, England Who: Stephen Hawking In 1974, a brilliant 32-year-old physicist published a not-quite-two-page paper in the journal Nature — and blew up one of our fundamental assumptions about black holes. The author was Stephen Hawking, and the paper, “Black hole explosions?,” would become his