Wherever there's life, there's intelligence; Dr Frank Vertosick explains the cleverness of the smallest living things, including germs, cells, and antibodies. A gifted writer, Vertosick shows us that intelligence - the ability to react to the outside world, to change behaviour, to survive - can be found wherever life exists. He demonstrates the keen intelligence of our immune system, how lowly bacteria mutate and outwit antibiotics, and how canny cancer cells elude our natural defences.