the reason screenland is so important, there's so much ice sitting on top of greenland. the more of that that melts the more sea level rise we'll see in coming years. >> you see those scenes, you see it -- saw the incredible image out of alaska. and from those kayakers. you get a sense that that's going to be the norm? >> we will see continued melting of land ice. that contributes to sea level rise around the world. what happens in the arctic doesn't stay in the arctic. as that continues to go on, we'll continue to feel it around the world. >> deke, all of that said, is there anything out there that has been put out there, the paris climate change accord, anything that could actually make a difference? >> so it will take, you know, action an the world. i'm not a policy expert but if we do want to stop or slow down global warming, it will take a