Slate: Cars and coal may get most of the attention, but one of the biggest contributors to climate change is the food industry. Globally, agriculture accounts for at least 25 percent of humanity's annual greenhouse gas emissions, according to the U.N. Food and Agriculture Organization. But some think that this situation could be radically changedinstead of just cutting agriculture's carbon footprint, maybe we can use agriculture to reverse climate change.
By harnessing photosynthesis' power, experts...