Science Friday Initiative
Science Friday: Aging City Pipes in Need of a Plumber's Touch
400 gallons is the average amount of water that travels to a family's home each day. The water travels to city dwellers by way of old, leaky pipes that are tricky to replace. In this audio recording listen as George Hawkins, general...
Science Friday Initiative
Science Friday: An Outhouse for the Sea
This toilet floats. You have to see it to believe it. Learn how rainwater and human waste can be converted to plants and clean water in a paddle-boat-toilet. It's a zero-waste waste disposal system that's discussed in this video and...
PBS
Pbs Learning Media: Inexpensive Inventions and the World's Poor: Earth Sky
Environmental scientist Ashok Gadgil is perhaps best known for his inventions which include an ultraviolet water purifier that can provide clean, cheap water for a thousand people per day and an inexpensive, ultra-efficient cooking stove...