We live on a green planet. Today we may take them for granted, but plants are the most important living things on Earth. Their colonization of land made it possible for all animal life to survive, from the smallest ants to the biggest dinosaurs. Their landscape once again changed when the grasses appeared, an incredible revolution in the history of life. How did they rise to dominance and conquer the Earth? And how did they manage to engineer the lives of the animals around them, ourselves included?