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Published online 11 October 2004 | Nature | doi:10.1038/news041011-2
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Molecular clock tied to fossil record
Evolutionary trees may finally provide answers everyone can agree on.
A way to date prehistoric events using molecules from living creatures is finally becoming precise enough to be useful. A team of scientists has improved on a 'molecular clock' system that can fix a rough date for the last common ancestor of two separate species.
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