Getting a Bead on Table Salt

By Joe Eaton

Microplastics are present in the San Francisco Bay, and at higher concentrations than Chesapeake Bay or the Great Lakes, according to a San Francisco Estuary Institute study led by Rebecca Sutton. There’s “a lot of uncertainty about potential impacts to people and wildlife,” she says.“[Miicroplastics are] a variable contaminant and challenging to interpret.” What we know is sufficient cause for concern: apart from their physical impacts, plastics can absorb other pollutants and some plastic ingredients are known endocrine disruptors. Cargill, the in-bay salt producer, says research is still determining the impact of microplastics on sea salt supplies but food safety remains a top priority.

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About the author

Joe Eaton writes about endangered and invasive species, climate and ecosystem science, environmental history, and water issues for ESTUARY. He is also "a semi-obsessive birder" whose pursuit of rarities has taken him to many of California's shores, wetlands, and sewage plants.

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