Guinea Worm is a waterborne disease that affects only the poorest of the poor people on the planet. But after millennia of inflicting pain and suffering in Asia and Africa, the disease is tantalizingly close to being wiped off the face of the earth. Thirty years ago there were millions of cases worldwide. In 2014, there were just 126. This decline is thanks in large part to Jimmy Carter and the the work of the Carter Center, which launched a Global Eradication Program in the 1980s. On the line today is Adam Weiss of the Carter Center who discusses Guinea Worm Disease, how this amazing decline in cases has occurred, and what needs to be done to eradicate it once and for all.