From the March 30, 2012, Listverse:
10. Anaesthesia (1842)
9. Penicillin (1928)
8. Green Revolution (1940s to late 1980s)
7. Steam engine (1750)
6. Fossil Fuels (5,000 years ago)
5. Automobile (1885)
4. Airplanes (1903)
3. Telecommunication (1839)
2. Genetic Modification (1973)
1. Computers (1936)
Making Life Better, One Invention At a Time? --Cooter
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