I went undercover in Southeast Asia to learn why a bizarre, scale-covered mammal is trafficked by the ton. It could go extinct before most people realize it exists.
East Carroll Parish, Louisiana, has the highest level of inequality in the country. And a body of water -- Lake Providence -- literally separates the rich from poor.
Alaska rape rate is the highest in the country -- three times the national average. To find out why, I went there to talk with victims, politicians -- and the rapists.
John D. Sutter is an award-winning columnist for CNN Opinion and creator of CNN's Change the List project. Follow him on Twitter, Facebook or Google+. E-mail him at ctl@cnn.com.