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This was a very interesting article. How do they know that the DNA is from the specific animals mentioned, especially the extinct ones? Beau T. JarvisTustin, Calif. The scientists compared the DNA they found with the genetic sequences described in GenBank, a repository of genetic information compiled by the National Institutes of Health in Bethesda, […]
- Paleontology
Fertile Ground: Snippets of DNA persist in soil for millennia
Minuscule samples of sediment from New Zealand and Siberia have yielded bits of DNA from dozens of animals and plants, including the oldest DNA sequences yet found that can be traced to a specific organism.
- Materials Science
Between the Sheets: In reactors and nanotubes, errant atoms get a grip
A new computer simulation predicts that neutron irradiation of graphite displaces atoms and bonds in unexpected ways.
