Humans responsible for ‘irreversible’ climate change, UN warns

Environmental protester chats to a cyclist as he stands with placards and plastic bottles in London on Monday. The authoritative Intergovernmental Panel on Climate Change report calls the climate change clearly human-caused and “unequivocal.” (AP)
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Updated 10 August 2021
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Humans responsible for ‘irreversible’ climate change, UN warns

  • UN report urges supply of affordable energy with minimum impact on environment

LONDON: Changes to the climate, including more severe weather events and rising sea levels, are irreversible and only more large-scale action by humanity can stop it spiraling out of control, the UN’s Intergovernmental Panel on Climate Change (IPCC) said in a report today.

The world will pass the 1.5 C warming threshold that the 2015 Paris Agreement aimed to avoid within 20 years. The temperature could jump by 2.0 C by 2060 and 2.7 C by the century’s end, the IPCC said in its latest update, which drew on 14,000 scientific studies.

“The alarm bells are deafening,” UN Secretary-General António Guterres said in a statement. “This report must sound a death knell for coal and fossil fuels, before they destroy our planet.”

In three months’ time, the UN COP26 climate conference in Glasgow, Scotland will try to wring much more ambitious climate action out of the nations of the world, and the money to go with it.

British Prime Minister Boris Johnson said he hoped the report would be “a wake-up call for the world to take action now, before we meet in Glasgow.”

The report says emissions “unequivocally caused by human activities” have already pushed the average global temperature up 1.1 C from its pre-industrial average. They would have raised it 0.5 C further without the cooling effect of pollution in the atmosphere, it said.

Some climate changes are already unavoidable, according to the report. Greenland’s sheet of land-ice is “virtually certain” to continue melting, which will in turn raise the sea level for centuries to come as the oceans warm and expand.

“We are now committed to some aspects of climate change, some of which are irreversible for hundreds to thousands of years,” said IPCC co-author Tamsin Edwards, a climate scientist at King’s College London. “But the more we limit warming, the more we can avoid or slow down those changes.” 

The only way of meeting the Paris goal of keeping temperature increases to 1.5 C by the end of the century is through negative emissions, which involves sucking more carbon dioxide out of the atmosphere than is added, the viability of which is questioned by many scientists.

“This report highlights the importance of the Middle East Green and Saudi Green initiatives to reduce greenhouse gas emissions and to produce energy globally on a sustainable basis,” Cornelia Meyer, CEO of energy consultancy Meyer Resources, told Arab News. “As we still need oil and gas, we still need producers and we need to look at other technologies beyond renewables, such as carbon capture.”

She added: “We need to look at all methods to ensure people can be supplied with affordable energy while having a minimum impact on the environment.”


Middle East war economic impact to depend on duration, damage, energy costs, IMF official says

Updated 05 March 2026
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Middle East war economic impact to depend on duration, damage, energy costs, IMF official says

  • Katz: Prolonged increase in energy prices could unanchor inflation expectations
  • IMF: 2026 global GDP outlook was solid, too early to judge war’s impact on growth

WASHINGTON: The Middle East war’s impact on the global economy will depend on its duration and damage to infrastructure and industries in the region, particularly whether energy price increases are short-lived or persistent, the International Monetary Fund’s number two official said on Tuesday.

IMF First Deputy Managing Director Dan Katz told the Milken Institute Future of Finance conference in Washington that if there is prolonged uncertainty from the conflict and a prolonged impact on energy prices, “I would expect central banks to be cautious and ‌respond to the ‌situation as it materializes.”
He said the conflict could ​be “very ‌impactful ⁠on ​the global economy ⁠across a range of across a range of metrics, whether it’s inflation, growth and so on” but it was still early to have a firm conviction.
Prior to the US and Israeli air strikes on Iran and counterattacks across the region, the IMF had forecast solid global GDP growth of 3.3 percent in 2026, powering through tariff disruptions due in part to the continued AI investment boom and expectations of productivity gains.
Katz said ⁠that the economic impact from the Middle East conflict would ‌be influenced by its duration and further geopolitical ‌developments.
Earlier, the IMF said it was monitoring the ​conflict’s disruptions to trade and economic activity, ‌surging energy prices and increased financial market volatility.
“The situation remains highly fluid and ‌adds to an already uncertain global economic environment,” the Fund said in a statement issued from Washington. Katz said the IMF will look at the conflict’s direct impacts on the region, including damage to infrastructure, and disruptions to key sectors.
“Tourism is an important one. Air travel. Is ‌there physical damage to infrastructure, production facilities, and the big industry in particular that everyone will be focused on is, ⁠of course, the energy ⁠industry,” he said.
Oil rose further on Tuesday as Iran vowed to attack ships passing through the Strait of Hormuz. Brent crude oil , the global benchmark, surged to $83 per barrel, up 15 percent from its level on Friday.
Katz said he expected central banks to “look through” a temporary rise in energy prices, given their focus on core inflation. But central banks could respond if a more persistent energy shock results in “a destabilizing of inflation expectations.”
He said the post-COVID inflation spike of 2022 was influenced by energy impacts from Russia’s invasion of Ukraine, with more pass-through from headline inflation to core inflation.
“And so I’m sure central banks, as they are thinking about how the ​geopolitical situation is translating into ​energy markets, will be looking at the lessons of the pandemic and seeing if they can apply any of those lessons in setting monetary policy,” Katz said.