really are seeing the overall loss. more importantly in just the last ten years how it has really taken a dive. so here is the thing we need to understand since antarctica ice melts have added about 0.3 inches to sea level. before 2012 it was 83 billion tons of ice yeari. since 2012 that rate has tripled. that means for a lot of coastal cities this is where you have some of the biggest impacts. take for example, this is london. you can see a lot of areas here. notice as we push this forward two degrees and four degrees warmer how it now becomes under water. i want to put something in perspective for people, too. the thing that we need to understand is just like hurricanes i can tell you there is going to be a hurricane next year but i can't tell you what city it may be in. we know that sea level rise is