and sourghum is a staple for kids in africa and has very little protein. we now have the capacity to change those things in this hotter, drier world. how much do you make of those changes and how much do they offer? >> there is a lot of promise in that innovation. farmers are very innovative. they experiment all the time. one of the most interesting and powerful innovations happens from farmers themselves. sometimes we get fixated on technology and this debate around gmos and really if you spend time with farmers they're doing experimenttation of their own. some of the very low tech, simple things, basic storage or in africa only 5% of farmland is irrigated. >> julia, i've seen a great video of irrigation where it's simple little tubes and drip, drip, drip opposed to no irrigation or water is wasted because it's evaporated before it gets to the crop, is that what you mean by innovation? something that it can need the planet. >> that's something that we need to address and use. it's the extension problem getting the methods of how to use drip irrigation to