I believe it's matter of time for having lifeforms degrading plastic. When trees appeared, there was nothing can degrade dead trees for a long time. And that became fossil fuels. So plastic would be degraded eventually. And some amount of it buried deep enough would be another kind of fossil fuels.
I believe it's matter of time for having lifeforms degrading plastic. When trees appeared, there was nothing can degrade dead trees for a long time. And that became fossil fuels. So plastic would be degraded eventually. And some amount of it buried deep enough would be another kind of fossil fuels.