This story appears in the March 2017 issue of National Geographic ... and maps. On nationalgeographic.com, you’ll find topical stories every day, as well as a climate change reference guide.

Here's what you need to know. Forecasts have painted a difficult picture for the future. But one new study argues that climate change has already imposed an economic penalty on many countries.

8 min read This story appears in the September 2013 issue of National Geographic magazine. The maps here show the world ... to survive a return to an Eocene Climate. West Antarctica: Like the ...