Agustín del Castillo is a journalist based in Guadalajara, Mexico, and host of the television news program Territorio Reportaje. His work has appeared in Mongabay, Milenio, and El País. Fred Pearce is an environmental journalist based in the U.K. He is a contributing writer for Yale Environment 360 and the author of numerous books, including most recently A Trillion Trees: Restoring Our Forests by Trusting in Nature.