Microplastics are not biodegradable. Thus, once in the environment, primary and secondary microplastics accumulate and persist. Scientists have warned that the situation is out of control. They have found microplastics pretty much everywhere they have looked for them: on mountains, in the ocean, in the Arctic sea ice, and in our air, drinking water and bodies, from the floor of the Mariana Trench to the summit of Mount Everest. The ingestion of microplastics can result in neurological and reproductive toxicity. In laboratory tests, microplastics have been shown to cause damage to human cells, including both allergic reactions and cell death. But so far there have been no epidemiologic studies documenting, in a large group of people, a connection between exposure to microplastics and impacts on health. #STOPPLASTICPOLLUTION