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By Nick Pisa UPDATED: 18:20 GMT, 25 September 2011 Macabre: Archaelogists believe this is the skeleton of a woman who was thought to be a witch These are the 800 year old remains of what archaeologists believe was a witch from the Middle Ages after seven nails were found driven through her jaw bone.
Sep. 26, 2011 — An international team of researchers studying DNA patterns from modern and archaic humans has uncovered new clues about the movement and intermixing of populations more than 40,000 years ago in Asia.
A "hidden" code linked to the DNA of plants allows them to develop and pass down new biological traits far more rapidly than previously thought, according to the findings of a groundbreaking study by researchers at the Salk Institute for Biological Studies. The study, published in the journal Science, provides the first evidence that an organism's "epigenetic" code - an extra layer of biochemical instructions in DNA - can evolve more quickly than the genetic code and can strongly influence biological traits.