New York Times: WHETHER streaming from the tailpipes of cars or the smokestacks of so many power plants and factories, carbon dioxide emissions keep growing around the globe. Now a Canadian company has developed a cleansing technology that may one day capture and remove some of this heat-trapping gas directly from the sky. And it is even possible that the gas could then be sold for industrial use. Carbon Engineering, formed in 2009 with $3.5 million from Bill Gates and others, created prototypes for parts of its...