How microplastics could be affecting our food supply

Microplastics are floating in the air around us, surging through rivers and streams, and burrowing deep into soils. And now, a new study suggests that all those tiny pieces of plastic are also disrupting the growth of plants.

A paper published in the Proceedings of the National Academy of Sciences on Monday found that the tiny plastic particles could be slashing photosynthesis rates globally. Microplastics, the scientists estimated, are responsible for a reduction in photosynthesis of 7 to 12 percent worldwide in plants and algae. That cut in photosynthesis, the researchers warned, could also impact large-scale crops that humans depend on, such as wheat, corn and rice.