Whatever climate scientists may currently disagree about (and good scientists are always disagreeing about something) virtually all of them have long since agreed that human activity — burning fossil fuels — has been making the global temperature go up. And now they have two very sobering, visual ways to explain how. The first is in the basement of a futuristic building in the foothills of the Colorado Rockies and requires a special pass, the other is down on the sea floor off the coast of California, requiring SCUBA gear and a waterproof map. The gigantic super-computer in the basement of the National Center for Atmospheric Research in Boulder, Colo., is so big you can walk down the aisles inside it, the walls of the sleek black servers at either elbow, wrapped in the constant hum of air coolers and countless trillions of silicon chip operations working day and night to calculate the climate future over the next several decades of the only home we’ve got: Earth. ‘These super computers are getting more and more powerful every year,’ scientist Jerry Meehl told us as he gave us the tour. ‘It makes the computers we were using for global […]