Hurricanes that went over the most unusually warm water for that time of year, and then hitm occurred before 1950. >> martha: that's very interesting. another statistic out there. you tell me what you think about it. since 1970, you've had a one tenths of a percent increase every decade. so it's the slow but steady climb, according to those numbers, that show that over time, the oceans are warming up. what do you say about that? >> the atmosphere is warming up. i think, probably based on the theory, over 50% of that is due to humans. but the warming is very slow. warm waters are only one part ...