Paul Behrens is an author and academic in environmental change at Leiden University. His popular science book The Best of Times, The Worst of Times: Futures from the Frontiers of Climate Science describes humanity’s possible futures in paired chapters of pessimism and hope is available September 2020. He wrote Food and Sustainability a transdisciplinary textbook with colleagues, out January 2020 with Oxford University Press. His research on food, energy and climate change has appeared in leading scientific journals and in 2018 he was awarded Leiden University’s Discoverer of the Year. His work on science communication has appeared in The New York Times, Scientific American, and the BBC.