There were two interesting global health technology stories on NPR’s All Things Considered today. The first story focuses on the Liter of Light project in the Philippines, in which a one-liter bottle of purified water diffracts sunlight and provides as much light as a 55-watt electric bulb. The second story is the second in NPR’s series of young innovators, which highlights the work of Marian Bechtel, who is working to detect landmines using sound. Listen to the story here.