Lee Silver: What Craig Venter would like to do ultimately, is create organisms, which look like trees, in fact they are trees, but instead of these organisms producing sap, the organisms would produce something like diesel fuel, or some other kind of source of energy. You would have a tree that's taking in the sunlight. The sunlight is converted directly into fuel. And I mean, diesel fuel isn't old fashion way of thinking, but that's what plants do is they convert sunlight into molecules that hold energy. That's where all of our fossil fuels come from. And then you have this system, and this is science fiction right now, but you have a system where you have a whole forest and under the ground the fuel-sap is being collected into pipes and coming out – and so the forest provides comfort to us. The fuel is completely carbon neutral, it's taking carbon out of the air, you put carbon back into the air. And you then take the fuel if its diesel fuel or any don't let cars run on it, you would put that into energy generating stations which create hydrogen fuel or some clean fuel. So all of this is dependent on biotechnology.