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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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Efficient Chromosome Doubling: Plant Cell Division
The Seeker is looking for an efficient chromosome doubling method in plants and in particular, metho...
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Fast Growth of Transformed Soybean Shoots
A method for accelerating growth of soybean shoots is desired.
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Three Associate Senior Lecturer positions within Natural Sciences
- The University of Kalmar
- Kalmar, Sweden
Scientist, Recombinant Protein Expression
- Novo Nordisk Foundation Center for Protein Research, University of Copenhagen
- Copenhagen 2200 Denmark
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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