of energy and climate during the obama administration. jodi, good to have you on. thank you so much. so tell us specifically what the trump administration's clean affordable energy rule will do. >> right. so here's the way i think about it, don. i think it's the most significant environmental rollback in u.s. history, and the reason i say that is that it's a dramatic reversal of the policies that the obama administration put in place to try to make progress on cutting greenhouse gasses, to do something about the problem of climate change. the rule the trump administration put out is basically a proposal that is trying to do as little as possible. it's about as meek as possible in terms of what it's asking for from the electricity sector. so whereas the obama clean power plan would have cut co2 emissions almost 20% below what the market would do anyway, the trump proposal proposes to do less than 1% cutting co2 emissions. so you can see that they're really trying to accomplish