can't do anything about it. >> this is not going to happen. >> this is going to happen. we have warmed the ocean too much. we're into it for centuries. the greenhouse gases that we're putting in the atmosphere are causing a warming. because they capture this back radiation -- >> it's manmade? >> it's manmade. since 1950 or so, we have been driving climate change. >> how do we reverse it? can we do anything? >> we have to. we probably won't be able to prevent the first six or ten feet of sea level rise. i think we're pretty well locked into that. >> beachfront communities in south florida are looking to the arctic to find out what the future holds for them. >> we are experiencing the climate change every day, and you are about to see it tomorrow. >> the warmed ocean is setting