The biggest source of microplastics in California coastal waters? Car tires

(CNN)Cars may be doing more damage to our environment than we realized. Microplastics have been found in the stomachs of a number of marine organisms, and chemical additives from microplastics can also bleed out into the ocean, according to the NOAA. It is also possible that contaminants from the water may adhere to microplastics. The NOAA has not yet been determined if these contaminants transfer through the food chain. The San Francisco Estuary Institute teamed up with the 5 Gyres Institute to complete a three-year study in what they claim is the first comprehensive regional study of microplastic pollution. The study found that more than 7 trillion pieces of microplastics wash into the San Francisco Bay each year, with much …