In South Sudan, millions of people have been on the run, fleeing violence since civil war broke out in December 2013. The U.N. is calling it the world's largest refugee crisis.
Health workers are on the run, too.
How do they tend to the needs of civilians in perpetual flight? Doctors Without Borders is testing a new strategy: a "runaway bag."




The Trump administration unveiled a controversial plan Thursday to permit drilling in all U.S. waters, including protected areas of the Arctic and the Atlantic, where oil and gas exploration is opposed by governors from New Jersey to Florida, nearly a dozen attorneys general, more than 100 U.S. lawmakers and the Defense Department.
You may have heard the expression: It's not the heat, it's the humidity. Researchers seem to agree, and are now warning that humidity is likely to increase the threat to human health from climate change-related temperature hikes in certain parts of the world.






























