and it quickly became an icon in the climate chanange debate. >> are the severe weather patterns we're seeing today related to climate change? >> we e are seeing t the loadinf the weather dice is the way i'd describe it. . you can't lolookt any one heat wave and say, you know, climate change caused that particular heat wave with any great degree of certainty because there's a lot of sort of natural variability in the weather, the vagaries of the weather. you can get unusuallyly hot days just from chance alone. you can geget unusually cold days from chance alone. one of the things you can do is tally those rolls. so these are random rolls of the weather dice. and the question is, are we loading those dice so that 6s are coming up more often? well, it turns out 6s, by some memeasure, are w coming up twice as often as they ought to. and what i mean by that is if you look, for example, at the u.s., you look at the rate in which we are breaking records for all-time warmth and you tally over all of the locations across the country, all of the days of the years for all of the, you know, hundr