On the outskirts of the Milky Way, floating slowly through space, there hangs a planet unlike any other. It has oceans, deserts, jungles and mountains. It has life that swims, life that soars and life that swings through the trees. It is a place of dazzling variety and infinite wonder - and it's the only world we've got. Climate change is happening, now. But it's not too late to change the story. Meet the humans, from...