Global experts are now more worried about the failure to act on the climate crisis than they are about infectious diseases, as the COP26 climate conference in Glasgow and major protest movements put the issue in sharp focus.

Three environmental risks – climate action failure, extreme weather, and biodiversity loss – were more worrying than anything else, according to the World Economic Forum’s annual survey of global risks.

The COVID-19 pandemic knocked worries about climate action off the top of the list in early 2020. Climate change had also been the biggest concern in 2016, just after the Paris Agreement talks.

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Between 2017 and 2019 weapons of mass destruction were the biggest concern among polled experts as North Korea ramped up its nuclear programme. These worries dropped off the top 10 list entirely this year.

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“The climate crisis remains the biggest long-term threat facing humanity,” said Peter Giger, chief risk officer at Zurich Insurance Group.

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“Failure to act on climate change could shrink global GDP by one-sixth and the commitments taken at COP26 are still not enough to achieve the 1.5C goal.

“It is not too late for governments and businesses to act on the risks they face and to drive an innovative, determined and inclusive transition that protects economies and people.”

The survey was largely filled out by people in Europe, where 44% of the expert respondents came from.

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More than 84% were either worried about the outlook for the world. Many feared that the pandemic had hit social cohesion and livelihood crises, as well as impacting climate action, mental health and extreme weather.

“Health and economic disruptions are compounding social cleavages,” said World Economic Forum managing director Saadia Zahidi.

“This is creating tensions at a time when collaboration within societies and among the international community will be fundamental to ensure a more even and rapid global recovery.”

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However, UK experts were much more worried about failure of cybersecurity, with climate change not even appearing in the top five concerns of UK experts polled.

Meanwhile a separate poll published today by Ipsos Mori found the British public are more worried about the coronavirus than environmental issues, which had topped polls around the COP26 talks.

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