fracking. alisyn: what is the answer. from your investigation if all these things are off the table and none of these substitutes work, what is the answer? >> the answer is to stop be so unscientific and wimpy. there is no clean answer. people will die producing coal or natural gas, there will be pollution, nuclear, whatever it is we need them all. we want to grow and people in poor countries want to have cars and air-conditioners. we have to embrace these things and lets the market sort sit out. no matter how much we subsidize them, it won't do the job. alisyn: that's what the president talks about, the green energy alternatives. >> and they feel so good. alisyn: if you talk about it enough will there ever be the momentum to get a ground swell