sea ice. >> it's not just winters that are expected to see prolonged periods of extreme weather. a blue ribbon panel of scientists commissioned by newyork city concluded that the number of summer days here that exceed 90 degrees will triple to 57 days a year by 2050. >> don dahler, thank you very much. well, it's not just wirnt and it's not just the united states. britain has been hit by one storm after another. not snow, but rain. charlie d'agata is there. >> reporter: catastrophic flooding has swallowed neighborhoods in southern england whole, worsened by yet another ferocious storm that swept in over the weekend. it's been relentless, 20 inches of rain and counting. last month was the rainiest ever it if anything, this month has been even worse. >> this is the calm between the storms. that is the river thawe-- mes, this is usually a riverside walkway, you can see the park benches. the rain from the last storm continues to fill these rivers. and the bad news is, there's more rain on the way. for months britain has been battered by savage winter storms packing hurricane force winds, and torrential rain. residents like paula burns a