Science On Top

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?