A cool flame: how Gaia theory was born out of a secret love affair

Scientist James Lovelock gave humanity new ways to think about our home planet - but some of his biggest ideas were the fruit of a passionate collaboration

Love rarely gets the credit it deserves for the advancement of science. Nor, for that matter, does hatred, greed, envy or any other emotion. Instead, this realm of knowledge tends to be idealised as something cold, hard, rational, neutral and objective, dictated by data rather than feelings. The life and work of James Lovelock is proofthat this is neither possible nor desirable. In hiswork, he helped us understand that humans can never completely divorce ourselves from any living subject because we are interconnected and interdependent, all part of the same Earth system, which he called Gaia.

Our planet, he argued, behaves like a giant organism - regulating its temperature, discharging waste and cycling chemicals to maintain a healthy balance. Although highly controversial among scientists in the 1970s and 80s, this holistic view of the world had mass appeal, which stretched from New Age spiritual gurus to that stern advocate of free-market orthodoxy, Margaret Thatcher. Its insights into the link between nature and climate have since inspired many of the world's most influential climate scientists, philosophers and environmental campaigners. The French philosopher Bruno Latour said the Gaia Theory has reshaped humanity's understanding of our place in the universe as fundamentally as the ideas of Galileo Galilei. At its simplest, Gaia is about restoring an emotional connection with a living planet.