This is probably the most important video that you will watch in your lifetime. It's a TED talk by an ecologist named Allan Savory, who has spent the majority of his life trying to find answers to desertification (grasslands turning into desert) and climate change. And he has. His methods of holistic management and planned grazing are already reversing desertification in parts of four different continents, with amazing success. Scientists that specialize in the study of carbon and climate change predict that if these methods are used on just half of the Earth's desertifying grasslands, it will change the global atmosphere back to pre-industrial levels. And this means the reversal of global climate change.