American tech companies have long looked to China as a key partner to help build and sell cutting-edge devices and services. But tensions are rising between Washington and Beijing, and Silicon Valley may be caught in the middle. Michelle Quinn reports.
Fertilizer is made of nutrients like nitrogen and phosphorus. Chemical fertilizers require huge amounts of energy to produce. But there are other, natural and more readily available sources. A project at the University of Michigan is aimed at making our water cleaner and our agriculture more sustainable by capturing one of those sources … rather than flushing it down the toilet. Faith Lapidus explains.