but. not a lack of water is equally dangerous. there john good to see you will move south so they can plant crops and find food. floods and droughts climate change become the main driver of mass migration you could write any apocalyptic scenarios you want and probably most of them to come to. the climate exodus starts april thirtieth on t w. today on global three thousand we re off to spain where obesity is a serious problem the solution finding strength in numbers. near-sightedness is skyrocketing in asia we go to taiwan to find out why. and in