Paul Kelley is a sleep expert and pioneer. Born in San Francisco, he started the University of California (Berkeley) at the age of 15, and holds four degrees. He was previously Honorary Clinical Research Associate in the Sleep and Circadian Neuroscience Institute at Oxford University and now works with The Open University on sleep, circadian and memory neuroscience. One of the most visible sleep scientists in Britain today, he is regularly featured on the news and occasionally writes for the Guardian. Together with Sian Griffiths, the Education and Families Editor for The Sunday Times, he is the co-author of TIME TO SLEEP, which will be published by Duckworth in 2018. The book shows how ignoring our biological clocks has caused an international sleep loss epidemic, and explains what we can all do to ensure that we get enough sleep.