Farmers are using an ancient technique to purify water

Like the ancient Amazonians of centuries past, farming companies today are using a carbon-rich material to enhance soils or purify polluted waste water. It’s called “biochar.” We take you to Florida, where farmers and geochemists are creating biochar through an age-old practice.

SciTech Now Episode 240

In this episode of SciTech Now, how farming companies are using a carbon rich material to enhance soils and purify waste water; can the Japanese art of paper folding, known as “origami,” save lives?; using apps to improve the lives of low-income Americans; and a look at innovative robotic technology being developed in Tokyo.