A good model is provided by astrobiology, which studies the origin, evolution and distribution of life in the universe. Physicists, chemists, astronomers, earth scientists and biologists have been able to come to- gether to tackle such problems as how life began; whether life could exist on Mars, Europa or Titan; and what range of extreme environments micro-organisms may tolerate. So far, there has been little dialogue between cancer biologists and astrobiologists, but this is set to change. Astrobiologists have a deep grasp of the nature of life and evolution, and could have much to contribute to the war on cancer. Nor is this a one- way street. I believe that cancer provides.
