 Happy New Year Miami! Forget about the ball dropping and confetti crowds in Times Square, Miami has an all-night dance party, La Gran Naranja drop, and of course Pitbull. Pitbull loves Miami, and so should you. But now's the time to enjoy it, because the city probably won't exist in the next 100 years. Miami is one of the first US cities already experiencing the effects of climate change, and it's only going to get worse. 60% of Miami-Dade County is less than 2 meters above sea level, and unabated climate change until 2100 could result in a 4.3 to 9.9 meter sea level rise. As if that weren't enough, Miami's geology renders it uniquely vulnerable. The city and its beaches are built on porous limestone, which soaks up seawater. The seawater forces sewage up from its pipes where it can pollute fresh water. South Florida is mostly at sea level. About 2.4 million people live less than 1.2 meters above the sea. That's like if all the residents of Wyoming, Vermont, and New Hampshire were at risk. Miami isn't the only city facing an Atlantis-like future. Here in the US, New Orleans is also under serious threat. And half of Mumbai, India, home to more than 20 million people, will be submerged if the earth's temperature raises 4 degrees Celsius above pre-industrial levels. In Egypt, just a 1 meter increase in sea level could force 10% of Egyptians, mostly in the Nile River Delta, from their homes. Bangladesh will be 17% underwater by 2050, displacing about 18 million residents. 2014 was the hottest year on instrumental record since 1880. 10 of the last hottest years, with the exception of 1998, have occurred since 2000. And 2015 is on track to surpass 2014 by a significant margin. In India, 2015 had an extreme summer heatwave, causing 2,200 deaths. Up north, Greenland's ice sheets experience historically low ice cover. Unfortunately, current projections say 2016 isn't going to be much better. Long term, we're looking at a US which could look more like this. And a world that looks like this. So as you're celebrating the New Year, ask, who's going to last longer? Miami or Pitbull? My money's on Mr. 305.