From our archive: Recorded live in London in 2014 at 5x15 at Conway Hall. James Lovelock, who was elected a Fellow of the Royal Society in 1974, is the author of more than 200 scientific papers and the originator of the Gaia Hypothesis (now Gaia Theory). His many books on the subject include Gaia: A New Look at Life on Earth (1979), The Revenge of Gaia (2006), and The Vanishing Face of Gaia (2009). In 2003 he was made a Companion of Honour by Her Majesty the Queen, in 2005 Prospect magazine named him one of the world's top 100 public intellectuals, and in 2006 he received the Wollaston Medal, the highest Award of the UK Geological Society. John Gray is a writer and political philosopher. He has been Professor of Politics at Oxford University, Visiting Professor at Harvard and Yale and Professor of European Thought at the London School of Economics. He now writes full time. His books include Straw Dogs (‘That rarest of things, a contemporary work of philosophy, wholly accessible and profoundly relevant to the rapidly evolving world’ Will Self), Al-Qaeda and What It Means To Be Modern (‘The most arresting account I have read of our current crisis’ Ian McEwan), Heresies (‘Swiftian contempt for our latter-day priestlings, the believers in progress’ John Banville) and The Silence of Animals: On Progress and Other Modern Myths. 5x15 brings together outstanding individuals to tell of their lives, passions and inspirations. Learn more about 5x15 events: www.5x15stories.com Twitter: www.twitter.com/5x15stories Facebook: www.facebook.com/5x15stories Instagram: www.instagram.com/5x15stories