Germany's Gerhard Ertl won the Nobel Prize for chemistry on his 71st birthday. 10/2007 AP

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APnews

Germany's Gerhard Ertl won the Nobel Prize for chemistry on his 71st birthday. Ertl won the prize for his studies of chemical reactions on solid surfaces. (Oct. 10)

Germany"s Gerhard Ertl won the Nobel Prize for chemistry on his 71st birthday. Ertl won the prize for his studies of chemical reactions on solid surfaces. (Oct. 10)

science

Germany"s Gerhard Ertl won the Nobel Prize for chemistry on his 71st birthday. Ertl won the prize for his studies of chemical reactions on solid surfaces. (Oct. 10)

Germany's Gerhard Ertl won the Nobel Prize for chemistry on his 71st birthday. Ertl won the prize for his studies of chemical reactions on solid surfaces. (Oct. 10)