people at the highest levels of the u.s. government pretending that this problem doesn't exist, and pretending that we don't know the science, when really, kids who go to -- anyone who takes a high school class in basic earth science understands how climate change works. >> nathaniel, your terrific article, which i really commend, is at some level a little disspiriting. it seems like you're saying we had our chance. in the '80s, as you say, there wasn't in denialism, people understood the problem, republican administrations took it seriously, but ultimately we weren't willing to pay the short term price for the long term gain. the problems seemed too distant, too far in the future. but now it seems as though there is -- there are some hopeful signs, there is this new green revolution, there is solar energy and wind, all very small, i understand, but do you look at -- is your glass half full in any way or did that article