Paul Behrens (UK) is an author and academic at Leiden University. His popular science book, The Best of Times, The Worst of Times: Futures from the Frontiers of Climate Science (Indigo Press, 2020) describes humanity’s current trajectory and possible futures in paired chapters of pessimism and hope, on topics including the economy, energy, land and food. His research and writing has appeared in scientific journals and media outlets such as The New York Times, Scientific American, The Conversation, Politico, Nature Sustainability, Nature Energy, Nature Food, PNAS and the BBC.