A new study suggests that prebunking climate misinformation—that is, warning people about false claims before they encounter them—is more effective than debunking misinformation after people have already been exposed to it.

The study, published in the journal Nature Climate Change, found that prebunking was effective in reducing the impact of misinformation on people's beliefs about climate change. For example, people who were prebunked about a false claim that polar bears are thriving in the Arctic were less likely to believe that claim when they later encountered it.

"Our findings suggest that prebunking can be an effective way to combat climate misinformation," said study lead author Stephan Lewandowsky, a cognitive scientist at the University of Bristol. "By warning people about false claims before they encounter them, we can help them to build up resistance to misinformation and make them less likely to be persuaded by it."

The study also found that prebunking was more effective than debunking misinformation after people had already been exposed to it. This suggests that it is important to get ahead of misinformation and prebunk it before it has a chance to spread.

"Prebunking is like giving people a vaccine against misinformation," said study co-author John Cook, a climate scientist at the University of Queensland. "By prebunking misinformation, we can help people to develop the cognitive antibodies they need to resist misinformation when they encounter it."

The study's findings have implications for how we communicate about climate change. It suggests that we should focus on prebunking misinformation rather than debunking it after it has already spread. We should also be proactive in identifying and prebunking false claims about climate change before they have a chance to gain traction.

"We can't afford to let climate misinformation spread unchecked," said Lewandowsky. "Prebunking is a powerful tool that we can use to combat climate misinformation and protect the public from its harmful effects."