 This figure is from the IPCC, and it's showing precipitation, rainfall in the future, for a moderate warming scenario. And on the left here is December, January, February. This is winter. And on the right here is maybe of more interest. This is summer. And so this is showing how much water will come out of the sky. But things will look drier than this in a warmer world because evaporation will go up. In general, what you'll notice, let's just look at the one on the right here from summer. And sort of these redder or orange areas down in here are going to be drier in the summer. And these bluer areas in the middle then are going to be wetter in the summers, up in here at the poles as well. So what you generally tend to find is that the wet areas get wetter and the dry areas get drier. But in the modern world we grow a lot of food in these places that are going to get drier. If you add in that the rain will evaporate faster and that when it comes it will fall really fast and tend to run off more, there's real worries about drought in the future.