As the term “carbon footprint” marks its 25th anniversary this year, researchers are beginning to question its effectiveness in driving meaningful climate action. Initially popularized by the Oxford English Dictionary as the 2007 UK Word of the Year, the concept of a “carbon footprint” has helped raise awareness about the environmental impact of our personal choices, from the food we eat to the energy we use. However, some experts argue that the focus on individual responsibility may have diverted attention from the larger systemic changes needed to address climate change.

The term was first coined in 1999 by the BBC’s Vegetarian Good Food magazine and quickly gained traction. It became a widely recognized way to measure the environmental harm of everyday activities, such as the higher carbon emissions of beef compared to chicken. “It highlights how every choice we make, whether as individuals or organizations, contributes to environmental changes,” says Irene Bertolami, a researcher at the Eurac research center in Italy.

While the carbon footprint concept has helped raise awareness, it has not translated into decisive action by governments or businesses, according to Antje Boetius, director of the Alfred Wegener Institute in Germany. She points out that, despite widespread recognition of the term, reducing carbon emissions remains costly, and fossil fuel reliance continues to prevail. “Politically, [the term] has not led to proper conclusions regarding national carbon emission pathways,” she says.

Another issue is the lack of standardized methodologies for calculating carbon footprints, which leads to confusion and even greenwashing. A 2021 study highlighted the chaos in comparing the environmental impacts of different products and actions due to inconsistent definitions. Experts argue that standardization is crucial to avoid misleading calculations and comparisons.

Critics also point to the use of the term by major oil companies, particularly BP, which hired a public relations firm to popularize the term in the early 2000s. BP introduced one of the first carbon footprint calculators in 2004, which some see as an attempt to shift the responsibility for climate change onto consumers. “I think the PR of the oil industry has worked really well to divert attention from the need for systemic change,” says Boetius.

Rather than focusing on individual actions, researchers argue that the conversation should shift towards broader societal and governmental action. Tom Bradley, director of the environmental consultancy Decerna, calls the emphasis on personal carbon footprints a distraction. “We need a wholesale societal shift and a complete change in how everything is done,” he says.

Experts like Mathis Wackernagel, president of the Global Footprint Network, advocate for more comprehensive measures of sustainability, such as the Ecological Footprint, which accounts for overall resource consumption and waste generation. Wackernagel believes that instead of focusing solely on carbon emissions, we should measure the broader impact of human activities on resource security.

As the conversation around climate action evolves, researchers urge a shift in focus from blaming individuals to demanding more significant climate policies from governments and businesses. “Often people are surprised when they learn that a small percentage of businesses or individuals are responsible for the majority of carbon emissions,” says Boetius. Ultimately, experts suggest that the goal should be to secure resources and reduce pollution in ways that go beyond the individual level, creating more sustainable systems for the future.