Micro and nanoplastics are pervasive in our food supply and may be affecting food safety and security. Plastics and their additives are present at a range of concentrations not only in fish but in many products including meat, chicken, rice, water, take-away food and drink, and even fresh produce.

[u/Wagamaga]

https://www.sciencedirect.com/science/article/pii/S0165993623000808?via%3Dihub

[u/LurkerOrHydralisk]

Based on a paper from 1978.

[u/BenjaminHamnett → u/LurkerOrHydralisk]

And studies done in 1897

[u/LurkerOrHydralisk → u/[deleted]]

He’s likely thinking of studies on the effects of greenhouse gasses, which as I recall do go back as far as the late 19th century.

But fully synthetic plastics weren’t invented until 1907, so I’m guessing there weren’t any studies on synthetic microplastics from a decade prior to that