New Scientist Breaking News - Oldest DNA exposes ancient ecosystems:
"The permafrost contained DNA from eight species of mammals including woolly mammoth, steppe bison and musk ox, dating back 30,000 years, as well as 28 families of trees, shrubs, mosses and herbs, some of which lived 300,000 to 400,000 years ago.
By drilling at widely spaced locations, and at different depths, the team could recreate ancient landscapes and watch them evolve. 'From just two grams of soil, you can obtain a meaningful sample of the ecosystem,' says Willerslev."
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