What made you sad today

It is estimated that world natural gas and oil reserves will run out in about 50 years, with coal lasting perhaps 50-80 years beyond that. Then there will be no more production of forever plastics. Celluloid was invented in 1869, so by 2075 we will have had plastics just a little over 200 years, during which we have irreversibly polluted our planet. We can only hope some bright young thing comes up with a genius idea to remove all those micro-plastics from the world.

Eventually, microbes are likely to develop that find plastics delicious to eat - but could be centuries to millions of years in the future. Could biochemists help their development?