It's one of the clearest injustices of climate change: The Marshall Islands likely won't exist if we warm the planet 2 degrees. I traveled to the remote Pacific to learn what it's like to try to process that doomsday forecast. And why some people already are making the painful decision to leave. You voted for this coverage as part of CNN's two° series.
Mauritania's endless sea of sand dunes hides an open secret: An estimated 10% to 20% of the population lives in slavery. But as one woman's journey shows, the first step toward freedom is realizing you're enslaved.