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There’s no mincing words: The list of climate records broken and the number of “unprecedented” extreme weather events this year goes on and on. Just in the past few months, at least 1,750 people died in monsoon flooding in Asia that a consortium of climate scientists attributed to human-caused global heating. Related video above: Solar and wind power increased faster than electricity demand in first half of 2025, report saysIn the U.S., investments in renewable, non-polluting energy were rolled back, and policy moves like the Trump administration’s “Big Beautiful Bill” and the Environmental Protection Agency’s reconsidering a key part of the federal government’s legal authority to regulate emissions.However, other nations have continued to make policy progress on prioritizing renewable energy and protecting the environment, and so have some scientists and groups on this side of the Atlantic.Here are a few of the highs and lows of humanity’s effect on our planet this year.The bad news firstGoal of keeping warming to 2.7 degrees no longer realisticHumans have failed to keep global warming to 2.7 degrees Fahrenheit, long considered the goal following the original Paris climate agreement, according to UN Secretary General António Guterres. “Overshooting is now inevitable,” he said.Scientists widely consider the 2.7 degree goal the point at which climate change will begin hitting its most severe, irreversible damage.“We don’t want to see the Amazon as a savannah. But that is a real risk if we don’t change course and if we don’t make a dramatic decrease of emissions as soon as possible,” Guterres said ahead of the 2025 UN climate summit COP30, urging humanity to change course immediately. COP30 fails to make substantive progressUnfortunately, the outcomes from that UN summit did not live up to the secretary general’s hopes. This summit is an annual meeting where member countries measure their progress on addressing climate change and agree to legally binding goals to reduce greenhouse gas emissions.However, this final decision coming out of this year’s summit only included new voluntary initiatives to accelerate national climate action. According to commentary from the World Resources Institute, more than 80 countries advocated for a “global roadmap” to guide the transition away from fossil fuels, but negotiators didn’t include it in the final decision after they faced opposition from countries whose economies are built largely on oil and gas extraction and exports.World passes first climate ‘tipping point’This year, the world passed its first climate “tipping point,” meaning a threshold of irreversible change. Warming oceans have caused mass death in coral reefs, which are some of the world’s most diverse ecosystems. These reefs support a quarter of marine life and a billion people. Other tipping points, such as the devastation of the Amazon rainforest and melting ice sheets, are also approaching, scientists warn. Record-setting days of heat in major citiesThe world’s major cities now experience a quarter more very hot days every year on average than they did three decades ago, according to a September analysis by the International Institute for Environment and Development.“This isn’t a problem we can simply air-condition our way out of,” said Anna Walnycki, a principal researcher, in a press release. “Fixing it requires comprehensive changes to how neighbourhoods and individual buildings are designed, as well as bringing nature back into our cities in the form of trees and other plants.“Climate change is the new reality. Governments can’t keep their heads buried in the sand anymore.”Where positive action made a differenceGlobal renewable energy generation surpasses coal for first time This year, expanding solar and wind power infrastructure led to record shifts away from fossil fuels and toward renewables. Wind and solar farms produced more electricity than coal plants for the first time, a massive shift for power generation worldwide.According to a report from climate think tank Ember, in the first six months of the year, renewable energy overtook the global demand for electricity. The world generated almost a third more solar power in the first half of the year than it did in the same period last year, meeting a whopping 83% of the global increase in demand for electricity.Solar installations were up 64% around the globe after the first half of the year, driven largely by China, whose solar installations more than doubled compared to last year. Solar installations rose in the U.S. by only 4%, however.Pennsylvania children see drop in asthma after a coal plant closedAfter a coking plant closed near Pittsburgh, the population living in the area saw an immediate 20.5% drop in weekly respiratory trips to the emergency room, according to a study published almost 10 years later. Even more encouraging was that over the immediate term, pediatric emergency department visits decreased by 41.2%, a trend that increased as the months went on. The region also saw lower hospitalizations for chronic obstructive pulmonary disease (COPD), the fourth-leading cause of death worldwide.Congestion toll drops emissions in NYC by 22%In January, New York City became the first in the country to put in place a toll on drivers in certain parts of the city during rush hours. The measure was intended to reduce traffic and improve health. During the first six months of the policy, NYC emissions dropped 22%. The city is using the revenue to fund mass transit, including the subway system.
There’s no mincing words: The list of climate records broken and the number of “unprecedented” extreme weather events this year goes on and on. Just in the past few months, at least 1,750 people died in monsoon flooding in Asia that a consortium of climate scientists attributed to human-caused global heating.
Related video above: Solar and wind power increased faster than electricity demand in first half of 2025, report says
In the U.S., investments in renewable, non-polluting energy were rolled back, and policy moves like the Trump administration’s “Big Beautiful Bill” and the Environmental Protection Agency’s reconsidering a key part of the federal government’s legal authority to regulate emissions.
However, other nations have continued to make policy progress on prioritizing renewable energy and protecting the environment, and so have some scientists and groups on this side of the Atlantic.
Here are a few of the highs and lows of humanity’s effect on our planet this year.
The bad news first
Goal of keeping warming to 2.7 degrees no longer realistic
Humans have failed to keep global warming to 2.7 degrees Fahrenheit, long considered the goal following the original Paris climate agreement, according to UN Secretary General António Guterres. “Overshooting is now inevitable,” he said.
Scientists widely consider the 2.7 degree goal the point at which climate change will begin hitting its most severe, irreversible damage.
“We don’t want to see the Amazon as a savannah. But that is a real risk if we don’t change course and if we don’t make a dramatic decrease of emissions as soon as possible,” Guterres said ahead of the 2025 UN climate summit COP30, urging humanity to change course immediately.
COP30 fails to make substantive progress
Unfortunately, the outcomes from that UN summit did not live up to the secretary general’s hopes. This summit is an annual meeting where member countries measure their progress on addressing climate change and agree to legally binding goals to reduce greenhouse gas emissions.
However, this final decision coming out of this year’s summit only included new voluntary initiatives to accelerate national climate action. According to commentary from the World Resources Institute, more than 80 countries advocated for a “global roadmap” to guide the transition away from fossil fuels, but negotiators didn’t include it in the final decision after they faced opposition from countries whose economies are built largely on oil and gas extraction and exports.
World passes first climate ‘tipping point’
This year, the world passed its first climate “tipping point,” meaning a threshold of irreversible change. Warming oceans have caused mass death in coral reefs, which are some of the world’s most diverse ecosystems. These reefs support a quarter of marine life and a billion people.
Other tipping points, such as the devastation of the Amazon rainforest and melting ice sheets, are also approaching, scientists warn.
Record-setting days of heat in major cities
The world’s major cities now experience a quarter more very hot days every year on average than they did three decades ago, according to a September analysis by the International Institute for Environment and Development.
“This isn’t a problem we can simply air-condition our way out of,” said Anna Walnycki, a principal researcher, in a press release. “Fixing it requires comprehensive changes to how neighbourhoods and individual buildings are designed, as well as bringing nature back into our cities in the form of trees and other plants.
“Climate change is the new reality. Governments can’t keep their heads buried in the sand anymore.”
Where positive action made a difference
Global renewable energy generation surpasses coal for first time
This year, expanding solar and wind power infrastructure led to record shifts away from fossil fuels and toward renewables. Wind and solar farms produced more electricity than coal plants for the first time, a massive shift for power generation worldwide.
According to a report from climate think tank Ember, in the first six months of the year, renewable energy overtook the global demand for electricity. The world generated almost a third more solar power in the first half of the year than it did in the same period last year, meeting a whopping 83% of the global increase in demand for electricity.
Solar installations were up 64% around the globe after the first half of the year, driven largely by China, whose solar installations more than doubled compared to last year. Solar installations rose in the U.S. by only 4%, however.
Pennsylvania children see drop in asthma after a coal plant closed
After a coking plant closed near Pittsburgh, the population living in the area saw an immediate 20.5% drop in weekly respiratory trips to the emergency room, according to a study published almost 10 years later. Even more encouraging was that over the immediate term, pediatric emergency department visits decreased by 41.2%, a trend that increased as the months went on. The region also saw lower hospitalizations for chronic obstructive pulmonary disease (COPD), the fourth-leading cause of death worldwide.
Congestion toll drops emissions in NYC by 22%
In January, New York City became the first in the country to put in place a toll on drivers in certain parts of the city during rush hours. The measure was intended to reduce traffic and improve health. During the first six months of the policy, NYC emissions dropped 22%. The city is using the revenue to fund mass transit, including the subway system.
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