Professor Alice Roberts is a writer, broadcaster, and President of Humanists UK. She is the bestselling author of eight popular science books including Evolution: The Human Story, the Incredible Unlikeliness of Being and Tamed: Ten Species that Changed Our World. Making her television debut on Time Team in 2001, she has become one of Britain's best-known broadcasters and has written and presented a huge range of television series for BBC2, BBC4 and Channel 4, including The Incredible Human Journey, Origins of Us and Ice Age Giants, and several Horizon programmes. Her humanist 'mini-sermons' on Twitter have been liked and shared many thousands of times.