Summary: Two things – agriculture and fossil fuels, are causing climate change. Agriculture is the production of food and fibre from plants and animals from Earth’s land and waters. Agriculture made civilization possible, but over centuries caused the vast man-made deserts, and is currently leading globally to producing more eroding soil than food. Viewing the major changes on Earth from space Dr. Elisabet Sahtouris described humans as a “desert forming species”. Climate change will continue even in a post fossil fuel world because of desertification.