Microplastics

These days, microplastics seem to have displaced methane and carbon dioxide as the environmental bogy man. And not that we shouldn't worry about all pollution sources, but it turns out that, once again, driving is a big problem--not just for global warming but for microplastics as well:

"Driving is not just an air pollution and climate change problem — turns out, it just might be the largest contributor of microplastics in California coastal waters.

"That is one of many new findings, released Wednesday, from the most comprehensive study to date on microplastics in California. Rainfall washes more than 7 trillion pieces of microplastics, much of it tire particles left behind on streets, into San Francisco Bay each year — an amount 300 times greater than what comes from microfibers washing off polyester clothes, microbeads from beauty products and the many other plastics washing down our sinks and sewers."

https://www.latimes.com/environment/story/2019-10-02/california-microplastics-ocean-study

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