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It is often seen as the scourge of modern society, littering our highways, byways and beaches. But now a new study argues that modern plastics are also a valuable archive documenting activities and behaviors at a crucial time in our human history.

The research is in the journal Cambridge Prisms: Plastics.

The UN estimates that 400 million tons of plastic is produced every year, posing one of the biggest threats to the environment. Apart from the environmental impact, microplastic particles routinely infiltrate humans, animals and plants.

However, Professor John Schofield, from the University of York and the lead author of the study, said plastics also help tell the story of the modern era.

He said, "It is easy to view plastics as a toxic legacy and the cause of environmental harm, which鈥攐f course鈥攖hey are. But as archaeologists, we can also view them from another angle entirely鈥攁s a valuable archive that documents human impacts on planetary health.

"Plastics are everywhere鈥攆rom the deep ocean to high mountains鈥攕o are ubiquitous, resilient, and toxic as they continually break down, eventually to nanoscale. In this new paper we question how society should view an archaeological record that represents such a valuable archive documenting activities and behaviors at a crucial time in human history, while at the same time being a dangerous contaminant, threatening planetary health.

Professor Schofield, who is also affiliated with Flinders University in South Australia, brought together a cross-disciplinary team of researchers from archaeology, history, chemistry and earth sciences at Flinders to carry out the study.

Along with fellow UK academic Prof Fay Couceiro from the University of Portsmouth, and Dr. Alessandro Antonello from the University of Tasmania, the paper explores the potential to use the planet's Plastic Age as a way to study people's relationship with the world, in the same way that archaeologists study these relationships in the deeper past, through the evidence of stone tools, metal and ceramics.

The Plastic Age, in contrast to earlier named periods, started simultaneously all around the globe in the 1950s and is thus a global phenomenon which is deeply entrenched in other contemporary global issues such as consumerism, habitat destruction and the combustion of fossil fuels.

The study argues that archaeology is in a perfect position to shine a light on the processes of plastic pollution as well as create a record of contemporary events and human behaviors: an "archaeology of us."

In recent years, archaeology has come to be defined more broadly, to not only study the deeper past but also how people in contemporary societies interact with the world around them, through studying the material culture they leave behind.

The authors of this study say we should view the environment as an archaeological archive whose record can be studied with a view to both understanding and helping to reduce plastic pollution. To do this, they suggest focusing interventions on the moment when plastics move from everyday use to discarded contexts.

Professor Schofield added, "Only recently have archaeologists started taking an interest in plastics, and it is vital that they do. We need this archive, both to help us understand and try to reduce our impacts now, but also to ensure people can understand these impacts in the future."

Flinders University Professor of Archaeology Alice Gorman said, "Our aim is to show how plastics are more than just pollution鈥攖hey're a record of human behavior in the contemporary world that extends from the deepest oceans to the furthest reaches of the solar system, everywhere that spacecraft have traveled. There are even plastics on the moon."