The technology behind the map is impressive -- a major step beyond the static graphics in the IPCC report. Once you get a hang of it, you can clearly see the disastrous impact of climate change on every corner of the planet — from rising temperatures to rising seas. The atlas took 3 years to make and “over 1.5 million hours of computing time” on a supercomputer, and tries to strike a balance between the simplicity of, say, Google Maps, and a highly specialized scientific tool. A few features worth pointing out: the side-by-side function, which shows two different climate scenarios next to each other on a map; also a neat graphing tool called seasonal stripes; and the “point information” button on the right side of the map, to get information on whatever variable you’ve selected by just clicking anywhere on the atlas.