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News from two Nasa probes: Deep Space 1 sends back pictures of Comet Borelly and the NEAR Shoemaker probe sends back data from the surface of the asteroid Eros. How sailors in the eight-month round-the-world Volvo Ocean Race will be conducting oceanographic research. Just add water – the amazing growth of cyanobacteria in deserts. Evidence of ancient humans in northern China and how tools more than a million years old are changing our understanding of human migration. Artificial cows in Africa used to trick tsetse flies into feeding on insecticide.