Megafauna until ten thousand years ago maintained soil health and the water cycle by trampling and feeding savannas. Since humans drove these to extinction on most continents, it is up to graziers with large animals (cattle, sheep, etc.) to mimic this effect by moving the animals frequently as predators would have done, so they get the freshest grazing and do not overgraze. Animals can actually restore water cycles and sequester carbon and be a climate solution rather than a problem – if they are grazed properly, Siobhan Griffin once lived in the Northeastern US and now lives in New Zealand and helps ranchers all over the world to do it right. Show recorded in April 2025.