Composting toilets keep waste out of the water cycle. But have you heard about the phosphorus cycle? Ricky Baruch and Deb Habib put environmental justice into action at their off-grid, sustainable ...

Add Yahoo as a preferred source to see more of our stories on Google. One of the more overlooked marvels of the modern skyscraper is its plumbing system, which handles the very important job of ...

The Reinvent the Toilet Challenge asked engineers to dream up a replacement for the antiquated flush toilet. Michael Hoffmann and his team at Caltech responded with a solar-powered toilet that ...

SEATTLE (AP) – These aren’t your typical loos. One uses microwave energy to transform human waste into electricity. Another captures urine and uses it for flushing. And still another turns excrement ...

Every time someone flushes a toilet in the Twin Cities, chances are the contents will end up on a farmer’s field. In that way, the sewage system operated by the Metropolitan Council performs the ...

Happy World Toilet Day. If you have a toilet to flush, consider yourself lucky. Lots of people on Earth don't have one, and that's an environmental problem the United Nations has aimed to highlight ...