Mark Miodownik, Professor of Materials and Society at UCL, Director of the Institute of Making, and co-chair of the Food, Metabolism and Society Research Domain, presents a new podcast on BBC Radio 4: Plastic Fantastic.
Plastic Fantastic explores our love/hate relationship with plastic, why we have ended up with oceans of waste blighting the environment and what science and society can do about it.
We may not be on speaking terms right now. But we do have a love affair with plastic, in fact it can be all consuming. Adaptable, lightweight, cheap and hygienic - fantastic plastics started to win our affection back in the late 19th century. Bakelite was an early plastic invented to replace expensive wood. Celluloid was one of the earliest plastics, failing to replace ivory in billiard balls, but revolutionising the world as movie film. Plastic really did change our world. Plastic radar insulation played a role in helping the Allied forces win the Second World War and after the conflict, factories start to churn out cheap, mass-produced goods in the new synthetic polymers. But some of the key virtues of plastic may now have paradoxically poisoned the relationship. Being virtually indestructible, has led to a build-up of toxic micro-plastic in the oceans and environment. We've grown to regard many plastics as cheap and disposable, we take it for granted, rely on it too much, value it too little and are too ready to cast it aside after one single use.*
Plastic waste has been a global crisis waiting to happen. To date it's estimated that around 8.3 billion tonnes of waste plastic exists. That's 25 Empire State Buildings or 1 billion elephants. Incredibly around half of this has been generated in just the last 14 years, despite mass production having begun in the 1950s. Events such as China's recent refusal to take any more "foreign rubbish" and Sir David Attenborough's graphic portrayal of the devastation that plastic waste is causing in our oceans, has prompted political and media discussion like never before. We are at a critical moment where, if we're to turn the tide on plastic pollution, it will require science and society to come together to create real change. But it won't be easy. One major area that needs an overhaul is recycling. In the UK only 14% of plastic collected is recycled. We, and the rest of Europe tend to burn our waste for energy, and plastic has a calorific value similar to that of coal. But proponents of the circular economy say we should never consider plastic as waste at all and we should think of it as 'Buried Sunshine' - a resource that needs conserving - by reusing and recycling again and again.*
The solutions to the problem of plastic pollution and plastic waste lie in many directions. A global plan to stop littering will go a long way. But human behaviour change often needs some economic intervention. One idea by the UK government and many others around the world, is to give a little financial incentive in the form of deposits on plastic bottles, or taxation on single use plastic like coffee cups, food wrapping and plastic bags. Mark Miodownik investigates some of the scientific solutions such as alternatives to petrochemical plastic using microbes or plant materials, clever waste sorting technologies to help make the process easier, even using less plastic. And he hopefully untangles some of the confusing messages about plastic and comes up with ways to be plastic smart.*
*Episode description text taken from BBCiPlayer website.
Image credit: BBC iPlayer website