Nearly 21 million farmers in 452 counties across China have adopted recommendations from scientists in a 10-year agriculture sustainability study to reduce fertilizer use. According to Nature, their efforts are paying off: all told, the farmers are now $12.2 billion better off than they were before.
Yan Qu and Clement Cid spend a lot more time thinking about poop than your average academics. The pair, both at Caltech, are part of a team working on what could be the future of bathrooms: a self-cleaning, solar-powered toilet that turns human waste into hydrogen and fertilizer.
In 2007, officials from Berkeley, California shut off the electricity to an artists space known as the Shipyard. That action, which forced the artists there to seek a new way to power their flamethrowers, is the origin story of a company that now produces what it says is the world’s only carbon-negative power source.