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Nature 444, 134-135 (9 November 2006) | doi:10.1038/444134a; Published online 8 November 2006
Open Innovation Challenges
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Direct Molecular Detection of Proteins and Nucleic Acids
This Challenge is looking for novel approaches to protein and nucleic acid detection. This is an Id...
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Methods of Modeling Adaptation in Populations
The analysis of adaptation with a population is a frequently encountered computational modeling scen...
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Special report Telling the time
Abstract
Geochronologists are pinning down dates in deep time better than ever before. Rex Dalton talks to the experts who are redrawing the details of Earth history.
By fine-tuning their techniques, researchers are refining their ability to measure ever more precisely the ticking of Earth's geological clock.For decades, geologists and palaeontologists have had only ball-park estimates for when major events happened in the history of life on Earth.
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