FILE - In this Dec. 10, 1995 file photo, American professor F. Sherwood Rowland, left, receives the Nobel prize for chemistry from Swedish King Carl XVI Gustaf, right, at the Concert Hall in Stockholm, Sweden. Rowland, the chemist who sounded the alarm on the depletion of Earth's ozone layer, died Saturday, March 10, 2012, at his home in Corona Del Mar, Calif. at age 84. He was among three scientists awarded the 1995 Nobel Prize for chemistry for discovering that a byproduct of aerosol sprays, deodorants and other consumer products could destroy the earth’s atmospheric blanket. (AP Photo/Eric Roxfelt, File)

Associated Press
FILE - In this Dec. 10, 1995 file photo, American professor F. Sherwood Rowland, left, receives the Nobel prize for chemistry from Swedish King Carl XVI Gustaf, right, at the Concert Hall in Stockholm, Sweden. Rowland, the chemist who sounded the alarm on the depletion of Earth's ozone layer, died Saturday, March 10, 2012, at his home in Corona Del Mar, Calif. at age 84. He was among three scientists awarded the 1995 Nobel Prize for chemistry for discovering that a byproduct of aerosol sprays, deodorants and other consumer products could destroy the earth’s atmospheric blanket.  (AP Photo/Eric Roxfelt, File)
FILE - In this Dec. 10, 1995 file photo, American professor F. Sherwood Rowland, left, receives the Nobel prize for chemistry from Swedish King Carl XVI Gustaf, right, at the Concert Hall in Stockholm, Sweden. Rowland, the chemist who sounded the alarm on the depletion of Earth's ozone layer, died Saturday, March 10, 2012, at his home in Corona Del Mar, Calif. at age 84. He was among three scientists awarded the 1995 Nobel Prize for chemistry for discovering that a byproduct of aerosol sprays, deodorants and other consumer products could destroy the earth’s atmospheric blanket. (AP Photo/Eric Roxfelt, File)
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