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The announcement came as more than 100 world leaders gathered to talk of increased urgency and the need for stronger efforts to curb the spewing of heat-trapping gases.

With major international climate negotiations in Brazil 6 1/2 weeks away, the United Nations Secretary-General Antonio Guterres convened a special leaders summit Wednesday during the General Assembly to focus on specific plans to curb emissions from coal, oil and natural gas.

In a video address, Xi pledged that China would increase its wind and solar power sixfold from 2020 levels, make pollution-free vehicles mainstream and “basically establish a climate adaptive society.”

Europe then followed with a less detailed and not quite official new climate change fighting plan. Ursula von der Leyen, president of the European Commission, said last week, member states agreed that their emissions cutting targets would range between 66% and 72%. The EU will formally submit its plan before the November negotiations.

While the new promises are in the right direction and show stronger commitment to fighter climate change, “these targets will not be enough to keep us safe from climate destruction,” said Jake Schmidt, senior strategic director for international climate at the Natural Resources Defense Council.

Trump's climate comments challenged

Xi and Brazil’s leader also made statements on Wednesday afternoon that may have referred to U.S. President Donald Trump’s “While some countries are acting against it, the international community should stay focused on the right direction," Xi said.

Brazilian President Luiz Inácio Lula da Silva, who is hosting the upcoming climate conference, said, "no one is safe from the effect of climate change. Walls at borders will not stop droughts or storms,” Lula said. “Nature does not bow down to bombs or warships. No country stands above another.”

Said Guterres: “The science demands action. The law commands it. The economics compel it. And people are calling for it.”

Time to ‘wake up’ amid catastrophes

Marshall Islands President Hilda Heine said she was there to issue “a demand for us all to wake up from a community whose hospitals and schools are being destroyed’’ by rising tides. She said she has regularly been awakened by floods and drought emergencies in her small island nation and that it will soon be others' turn.

“If we fail to wake up now and end our dependence on fossil fuels the leaders of every country in this room will be woken up by calls about catastrophes of wildfires, of storms, of heatwaves, and of starvation and drought," she said.

Pakistani Prime Minister Muhammad Shehbaz Sharif said his country knows this all too well, with recent floods that have affected 5 million people across over 4,000 villages, killing over 1,000.

“As I speak to you, my country is reeling from intense monsoon rains, flash floods, mudslides and devastating urban flooding,” he said. “We are facing this calamity at a time when the scars of the 2022 floods that inflicted losses exceeding $30 billion and displaced millions are still visible across our land.”

Anthony Albanese, prime minister of Australia, called this a decisive decade for climate action and said Australians know the toll of more frequent and extreme weather events like cyclones, floods, bush fires and droughts. “Australia knows we are not alone,” he said.

‘Here we must admit failure’

“Warming appears to be accelerating,” climate scientist Johan Rockstrom said in a science briefing that started the summit. “Here we must admit failure. Failure to protect peoples and nations from unmanageable impacts of human-induced climate change.”

“We’re dangerously close to triggering fundamental and irreversible change,” Rockstrom said.

Texas Tech climate scientist Katharine Hayhoe told leaders that every tenth of a degree of warming is connected to worsening floods, wildfires, heat waves, storms and many more deaths: “What’s at stake is nothing less than everything and everyone we love.”

In a news conference, Lula said he invited both Trump and Xi to the November climate negotiations, saying it’s important that leaders listen to scientists.

Under the , 195 nations are supposed to submit new more stringent five-year plans on how to curb carbon emissions from the burning of coal, oil and natural gas. Technically the deadline was in February have filed theirs. Several countries filed or announced plans Wednesday.

U.N. officials said countries really need to get their plans in by the end of the month so the U.N. can calculate how much more warming Earth is on track for if nations do what they promise. Former U.S. President Joe Biden submitted America's plan late last year before leaving office and the Trump administration has distanced itself from the plan.

Before 2015, the world was on path for 4 degrees Celsius (7.2 degrees Fahrenheit) of warming since pre-industrial times, but now has trimmed that to 2.6 degrees Celsius (4.7 degrees Fahrenheit), Guterres said.

However, the Paris accord set a goal of limiting warming to (2.7 degrees Fahrenheit) since the mid 19th century and the world (2.3 degrees Fahrenheit) since.

Simon Stiell, UN's climate chief, said the Chinese plan "is a clear signal that the future global economy will run on clean energy. And that for every country, stronger and faster climate action means more economic growth, jobs, affordable and secure energy, cleaner air, and better health, for all of us, everywhere.”

Lula also praised China's announcement, but some advocates were underwhelmed, but they said China has reputation for under-promising and over-delivering on climate action.

“China’s latest climate target is too timid given the country’s extraordinary record on clean energy," said former Colombia President Juan Manuel Santos, chair of the group The Elders. "China must go further and faster”

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