Q: Most times when I use an automatic-flush toilet in a commercial building, it flushes two to three times. Do automatic-flush toilets waste or save water? – Ed Zajac, Orangevale A: Your experience is ...

Jack Gray and the other homeless men who sat in Pioneer Square's Occidental Park say they go to the mission when nature calls. Or to the Starbucks. Anywhere, they say, besides one of the city's fancy ...

Commissioned by the Bill and Melinda Gates Foundation, the G2RT toilet works without any connection to local sewage or water systems. About 3.6 billion people—almost half the world’s population—don’t ...

Many years ago, I wrote a feature for New Scientist about an innovation in waste-water treatment called urine-separation toilets, which, at the time, looked like becoming a desirable accessory for the ...