As we have learned from various documentaries on the subject, the profusion of micro-particles of plastic in our oceans and even our air and water are changing the biology of life. Ineradicable, plastic only becomes smaller in size. A synthetic polymer derived from petroleum, it can be reconverted into diesel fuel. Find out more here.
Wash your synthetic clothes (e.g. fleece jackets) less often; stop using drinking straws and so many plastic bags; how about milk paint ... ? Instead of buying gallons of latex (plastic) paint at Home Depot, put a little lemon juice or vinegar into skim milk, separate out the curd, add natural pigment to the leftover liquid, and paint your walls and furniture. That's how it was done in the old days!