I thought this interesting. Recently I’ve read about body contamination with micro plastics. While there are myriad sources, a massive one seems to be largely overlooked. Automotive tires were rubber a long time ago, but they are not rubber anymore, they are polymerized plastic being worn to dust in every populated area every day. If you drive, you are literally driving around in a cloud of suspended microplastic dust. I have no solution in mind, but I think it’s a worthy problem for humanity to seek a solution to.