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10 April 2014 11:44 am ,
Vol. 344 ,
The Pyrenean ibex, an impressive mountain goat that lived in the central Pyrenees in Spain, went extinct in 2000. But a...
Tight budgets are forcing NASA to consider turning off one or more planetary science projects that have completed their...
Ebola is not a stranger to West Africa—an outbreak in the 1990s killed chimpanzees and sickened one researcher. But the...
In an as-yet-unpublished report, an international panel of geoscientists has concluded that a pair of deadly...
Tropical disease experts tried and failed before to eradicate yaws, a rare disfiguring disease of poor countries. Now,...
Since 2002, researchers have reported that agricultural communities in the hot and humid Pacific Coast of Central...
Balkan endemic kidney disease surfaced in the 1950s and for decades defied attempts to finger the cause. It occurred...
- 10 April 2014 11:44 am , Vol. 344 , #6180
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The Path of Life
17 March 1997 8:00 pm
A watershed in biochemistry--Melvin Calvin's scientific paper detailing the complete biochemical pathway through which plants convert carbon dioxide from the atmosphere into carbohydrates--was published 35 years ago, in the 16 March 1962 issue of Science. Calvin, a former chemist at the University of California, Berkeley, who died on 9 January, achieved this fundamental discovery using radiolabeled carbon dioxide, which became available after World War II, to track the fate of carbon in plants and to determine the metabolic reactions that take place at each step. The elucidation of key steps in this biochemical pathway had won Calvin the 1961 Nobel Prize in chemistry; during his acceptance speech at the Nobel ceremony in December that year, Calvin previewed his paper on the entire pathway.