CNN CNN Saturday Morning March 10, 2013 12:28:00
One of the things to worry about is the larger changes in sea level, changes in extreme weather. these are things that scientists are now looking at to try to understand what the impacts are. it's certainly consistent with what the ipcc had projected. >> over the last year, the national oceanic and atmospheric administration points to the effect that there have been record breaking extreme events in all 50 of the states. one, can we draw a causal relationship here and two, should we expecting more of this? >> we have to be careful. but the ipcc certainly suggested that certain extreme events w...