Climate crisis: People need to change their diet and flying habits to help planet, chief scientific adviser Sir Patrick Vallance warns

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People will need to eat less meat and change their flying habits in order to tackle the climate crisis, the UK's chief scientific adviser has warned.

Speaking ahead of the COP26 climate talks, Sir Patrick Vallance said behaviour changes will be required as well as new green technology to help the planet.

He joined senior scientific advisers from around the world to issue a statement ahead of the global summit, calling on leaders to take urgent action to limit warming to 1.5C.

The statement, released as leaders and negotiators head to Glasgow for the climate talks, said limiting warming "will require rapid, urgent and sustained action and significant behavioural, socioeconomic and technological transformations across the world".

Signed by nearly 40 chief scientists, it added that it was still possible to curb temperature rises to 1.5C, but only with steep reductions in global emissions by 2030 and reducing them to zero overall by 2050.

Sir Patrick said the message to world leaders is that "1.5C is achievable, it's absolutely what we should be aiming for" but it requires action now.

He added this decade is the decade of research and development of innovation as it has to be applied now or the world will not be able to reach the target.

"It's going to require detailed plans, it's going to require technology, it's going to require behavioural change and it's going to require monitoring in order to achieve this, including monitoring of emissions," he said.

On behavioural changes, Sir Patrick said reductions in meat-eating and flying would need to happen, adding: "There will be a move away from the extent of meat-eating we've seen in the past, and I think we will all need to think about our flying habits.

"But of course, coupled to that, there's also technological advances, so as options for green transport become real that will change again.

"One of the climate challenges is it's a series of small things from all of us that turn into a big change.

"Those little things, that appear like they're not very much, are important when they are aggregated across many, many millions of people."

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He said most of the technologies needed to shift to a greener world are already "visible", and warned against relying on a "magic new technology" coming along in future years to solve the problem.

He noted the "green choice needs to be the easy choice" for people, including on price, convenience, and with a clear understanding of what they can do on an individual level to make a difference.

In the statement, advisers made clear that stabilising the climate would limit sea level rises and extreme weather events, improve prosperity, and protect human health and nature.

It also said addressing climate change would require intense international collaboration on research and innovation to develop and deliver new solutions across all sectors of the global economy.

Governments should focus on piloting and scaling up existing green technologies over the next decade, accelerate the development of next-generation solutions, and involve every part of society in the green transition, which must be affordable, accessible, and fair, the statement said.

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