Feb. 14—Farmers across Washington already spread thousands of tons of fertilizer from human waste on their crops each year, but there’s a major blind spot when it comes to potential contaminants.

Globally, human excreta are a huge untapped source of nutrients. Now, a new perspective paper makes the case that biochar could help to unlock it. The PNAS paper shows that human waste contains over ...

A few weeks ago I lost the use of my toilet and learned firsthand just how much I missed it when it wasn't there. My plumbing went out of order when the pipe between my house and the city's sewer line ...