(1927) A professor of chemistry at the University of California, Irvine. He won the 1995 Nobel Prize in Chemistry along with Mario Molina and Paul Crutzen for their discovery that chlorofluorocarbons cause ozone depletion.
Rowland theorized that CFCs combine with solar radiation and decompose in the stratosphere, releasing atoms of chlorine and chlorine monoxide that destroy ozone molecules.
Rowland's research was first published in Nature magazine in 1974. Click here to read it.
His science (and his political activism - he was one of the first to go there) led to the US's 1978 banning of CFC-based aerosols, which ultimately led to the Montreal Protocol's world-wide ban.
Lecture: Cities and Global Climate Change
(Note: In the video Sherwood starts speaking at around 5:00)