The 10 greatest accidental discoveries, according to Wired magazine.
Men being treated for erectile dysfunction should salute the working stiffs of Merthyr Tydfil, the Welsh hamlet where, in 1992 trials, the gravity-defying side effects of a new angina drug first popped up. Previously, the blue-collar town was known for producing a different kind of iron.
Scottish scientist Alexander Fleming was researching the flu in 1928 when he noticed that a blue-green mold had infected one of his petri dishes – and killed the staphylococcus bacteria growing in it. All hail sloppy lab work!