The main issue in this talk is about scientific way to conserve various diversities in crops. Cary Fowler is biodiversity worrier who wants to save the world from agricultural collapse. Population tends to grow quickly, whereas food production increases poorly in size. He believes we can save our globe by freezing various kinds of seeds in cold place.I think it is very interesting because this way can be the prospective solution for the future issue such as famine and loosing diversity. And I chose this talk because it is actually real problem in now and in the future too.