Seventy percent of households in Kiribati and Tuvalu are would consider migrating because of climate change, a recent survey found.

What success at the Paris climate conference looks like.

The U.S. has taken in less than 1,000 refugees since the war began—while Brazil has issued more than 6,000 visas

When Ban Ki-moon was a child, the United Nations saved his village from a war. Can he save the U.N. from irrelevance?

The death toll is nearly double the Ebola outbreak

Early signs are mixed, but don't write it off yet