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Comparing DNA samples from a 4,600-year-old German burial site has provided the first "molecular evidence" of family life.
Nasa's successful Mars Phoenix lander mission comes to an end after nearly six months – but examination of the data is really just beginning. The future of the European Space Agency's reseach programme. The simplest eyes in the Animal kingdom and how they work. The recent successful transplanted windpipe was the first of a whole organ grown from stem cells.