The power of language in a plastic waste crisis

Only 9 per cent of plastic in the UK is successfully recycled. Research led by Professor Joanna Gavins highlights how language can be used to shape positive behaviours and change our relationship with plastic.

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Plastic is everywhere. Invented in 1907, the material is lightweight, strong and affordable and found in many everyday products ranging from water bottles and food containers to cutlery and medical equipment.

According to National Geographic, nearly a million plastic beverage bottles are sold every minute around the world. But plastic can take anywhere between 20 and 500 years to break down and is one of the largest contributors to the pollution damaging the earth鈥檚 ecosystem.

The UN Environment Programme found that 300 million tonnes of plastic, or the equivalent of the total weight of the human population, is produced every year. Discarded plastic is a growing pollution problem with more than 6.3 billion tonnes of plastic waste generated as of 2015, leading to 1 in 3 fish caught for human consumption now containing the material.

Most types of plastic are recyclable however a report by the Organisation for Economic Co-operation and Development (OECD) found that the world is producing twice as much plastic waste as it was two decades ago and only 9 per cent is successfully recycled. 

With over half of UK households choosing to put one or more items in the general rubbish rather than recycling, researchers at Sheffield are taking a linguistic approach to understand how to change the nation鈥檚 throwaway culture. 


A reuse system is no good if people don鈥檛 use it. We quickly realised that scientific, technological and engineering solutions for plastic pollution can't tackle the problem alone.

What really matters is behaviour change and encouraging more people to take up systems of reusing, before recycling. But to encourage this change you have to understand the benefits of reusing plastic and this can be done through language.

Professor Joanna Gavins

Co-Investigator of Many Happy Returns


Challenging recycling: A multidisciplinary project

Many Happy Returns (MHR) is a 拢1m multidisciplinary research project funded by UK Research and Innovation through the Smart Sustainable Plastics Packaging Challenge (as part of the Industrial Strategy Challenge Fund). The aims of this funding initiative are to find solutions to existing issues with plastic packaging, reduce plastic pollution and unlock barriers to create fundamental changes in the industry. 

The project brings together experts from seven departments (English, Geography, Psychology, Mechanical Engineering, Chemical and Biological Engineering, the Management School, and Chemistry) across four faculties at the University of Shef铿乪ld.

Of the ten university-led projects participating in this UKRI challenge, MHR is the only one to include a work package dedicated specifically to language. 

With a research focus on how humans conceptualise and experience language, Co-Investigator Professor Joanna Gavins is leading the linguistics work on understanding and changing society鈥檚 behaviour towards single-use plastic.

Analysing 4.5 million words of language

Language affects people鈥檚 behaviour and can be used to promote changes in thinking. The project studied the extent to which the public鈥檚 understanding of single-use plastic is aligned with the messaging of organisations such as manufacturers and food retailers.

Working closely with Senior Lecturer in Digital Humanities Dr Seth Mehl and postdoctoral research associates Dr Emma Franklin and Dr Stephanie Hills, the team collected linguistic data to see clearly how people talk about plastics in their everyday lives and the motivations behind reusing and recycling.

The team gathered over 4.5 million words from packaging and advertising, local council guidance, as well as consumer language on social media platforms such as Twitter, Reddit and Mumsnet  to evaluate different perceptions of plastic usage. 

The findings showed that citizens felt heavily reliant on companies and institutions to create a real change around plastics, packaging and their impact on the environment. 

鈥淲e found that while most people wanted to reduce their plastic usage, they felt powerless and unable to do so. Many supermarkets provide goods in single-use packaging that consumers didn鈥檛 necessarily ask for in the first place. There was a strong sense of frustration from consumers who felt like they were being blamed for something they had little control over鈥 explains Professor Joanna Gavins.

鈥淯nsurprisingly, our research highlighted an uncomfortable relationship between retailers and individuals due to language choices that didn鈥檛 land well with consumers. Many supermarkets use words such as helping, supporting and providing in their communications but these sentiments weren鈥檛 felt by the general public, causing a detachment between brands and consumers. We鈥檙e now producing a guide to support organisations in using language that will engage consumers and encourage them to adapt positive behaviours such as reusing a plastic item more than once鈥 she adds.

Yes, it鈥檚 plastic, but...

In 2022, the research findings were transformed into an interactive art installation titled 鈥榊es, it鈥檚 plastic but鈥︹ for the . The project collaborated with artist Lynne Chapman to present contradicting thoughts and beliefs surrounding plastic to the general public and encourage reflection on what it means to be environmentally friendly.

鈥淟ynne was fantastic at creating a visual representation of some of the consumer frustrations we found at the core of the research. It was important for us to share our findings with the public to communicate the role that our behaviour has on impacting and understanding single-use plastic pollution鈥 says Professor Joanna Gavins.

鈥淲e also worked with sound engineer and musician to create a soundscape of real quotes by people taken from our research findings. It was really important for us to rehumanise the data taken from online forums and shape it into a natural interaction which is full of opinion and passion. Sometimes when you take the langage out of context and start to analyse it you can lose a bit of that humanity. This interactive exhibition brought back to life people鈥檚 true emotions around single-use plastics and placed it back at the heart of the project鈥 she adds.

Supporting organisations

Based on their research findings, the team developed a guide to circulate to every local council in the UK, as well as supermarkets and plastics manufacturers nationally and internationally. Titled 鈥楬ow to talk about Plastics鈥, the document provides guidelines on how to use language to reduce plastic pollution without falling into the trap of greenwashing. The manual gives project partners such as Morrisons, Ocado, Co-op and Nestle direction in constructing effective messages to influence behaviour around plastic waste.

鈥淲e wouldn鈥檛 have had the Covid vaccine without plastic, plastic is everywhere and we can鈥檛 live in a world without it. We鈥檝e got to come to some kind of peace with our relationship with plastic and cherish and look after plastic materials more, but a lot of the time this isn鈥檛 an easy message to get across鈥 says Professor Joanna Gavins.

鈥淭he interdisciplinary nature of this project has been fundamental to evidencing society鈥檚 attitudes and behaviours towards plastic. I鈥檓 fortunate to work in an institution where linguistics is valued as much as science and engineering and hope our work together will drive business and behaviour change to reduce unnecessary plastic waste鈥 she adds.

This study is part of ongoing research on the Many Happy Returns project that continues to investigate UK discourses around the themes of plastic packaging and reuse.

Read the guide: How to Talk About Plastics

Written by Alina Moore, Research Communications Coordinator 

For further information contact: 

mediateam@sheffield.ac.uk

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