There's been an exciting new discovery in the fight against plastic pollution: mealworm larvae that are capable of consuming polystyrene. They join the ranks of a small group of insects that have been found to be capable of breaking the polluting plastic down, though this is the first time that an insect species native to Africa has been found to do this.
I’m confident that it will happen, these things just take time. There’s enough energy floating around bound up in plastic polymers, and the chemistry is simple enough, that something will learn to make use of it. 100 years is just way too short in evolutionary time for it to happen on a large scale.
Dead on. It happened with trees, and wood is still useful.