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Henrietta Lacks\'s immortal cancer cells, and the ethical controversy surrounding them.

An unusual virus could be the source of a mysterious form of hepatitis that causes liver failure in most horses.

If you thought mating in humans was complicated, spare a thought for the protozoan Tetrahymena thermophila, with its seven sexes!

Could the mysterious \'fairy circles\' in Africa be the result of termites, rather than alien landing pads?