There are ecosystems like coral reefs [at risk] through ocean acidification. Those are valuable things that we should protect.
Bill GatesI think if you talk to the experts in any field where you have to take on a unknown challenge, where you're going to be working on it for a long time you'd find that to work themselves up to their best performance and really throw themselves into it, you know, spend all these hours in there and ah, give it their... give it their best that optimism plays a role.
Bill GatesSorghum is kind of unusual. It can go to very high heats, but it's not as productive in most environments as maize is.
Bill Gates