Serious stuff: James Lovelock on TV.
Mark Lawson talks to James Lovelock (BBC 4 10 pm this evening) was an enthralling hour of TV, not least his description of his eureka moment in formulating the Gaia theory. Working the the NASA jet propulsion laboratory with Carl Sagan, an astronomist brought in data on the CO2 atmospheres of Mars and Venus and the idea of earth as a self-regulating organism was born. If that extraordinary