Simon L. Lewis is professor of global change science at University College London and University of Leeds. An award-winning scientist, he has been described as having “one of the world's most influential scientific minds”. He has written for the Guardian andForeign Policy magazine.
Mark A. Maslin is professor of earth system science at University College London and a Royal Society Wolfson Research Merit Scholar. He is the author of eight books and has written for The Times and New Scientist.