![Planet Money show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/026/080/small/npr-planet-money.jpg)
Summary: On today's show: Two stories from Kenya. 1. Poachers kill rhinos for their horns. Some economists think legalizing the horns could save the rhinos. **Warning: this story contains graphic audio.** 2. . Getting clean water to people in the developing world isn't just an engineering problem.