Our planet is facing a plastic pollution crisis. Each year we produce 300 million tonnes of plastic waste – that’s nearly the same weight as the entire world population. Predictions show that unless something is done to reduce this, we will have created four times as much plastic waste by 2050. It’s a well-known fact that much of this plastic waste ends up in our oceans, about eight million tonnes in fact – that’s enough to circle the earth 425 times. Each year this ‘ocean plastic’ is killing in excess of 100,000 marine creatures, and by 2050 there could...