Scientists accidentally created a mutant, plastic-eating enzyme

Some of humanity’s greatest scientific inventions—penicillin, X-rays, pacemakers, the microwave—were all created after researchers accidentally discovered how they could work.  Now we can add a new, monumental creation to that list: a mutant enzyme that starts degrading plastic into its original, natural components, discovered by sheer accident. Two years ago, Japanese scientists discovered a plastic-eating …