The United Nations says the world has officially lost its shot at holding global warming below 1.5 degrees Celsius without first overshooting it — and the United States is the glaring outlier behind the numbers, the only major economy where planet-warming pollution jumped sharply in 2025. The finding lands less than a month before world leaders convene in Turkey to hash out what comes next.
A Formal Turning Point in Climate Reporting
The U.N. Environment Programme's 17th annual assessment, titled “Emissions Gap Report 2026: The Point of Return,” concluded that halting global warming below 1.5 degrees Celsius without a temporary overshoot is no longer achievable, according to UN News. The 1.5°C threshold, established under the 2015 Paris Agreement, had long served as the benchmark for avoiding the planet's most severe climate impacts. As Houston Public Media reports, the annual assessment is compiled by an international group of scientists and found that countries overall are not doing enough to cut the emissions driving climate change.
Houston Public Media, citing the report, notes that the United States was the only major economy where pollution increased dramatically in 2025, and that it was tied with Russia among G20 nations for the highest per-capita emissions of carbon dioxide and other warming gases. China still emits significantly more total greenhouse gases annually than the U.S., the outlet notes, but China also has more than four times the American population. Globally, emissions reached 58.4 gigatonnes of carbon dioxide equivalent in 2025 — virtually flat compared with 2024, according to Trending Topics, as rising coal, oil, and natural gas combustion was offset only by a temporary drop in wildfire emissions that does not reflect any structural decarbonization.
Why US Pollution Climbed While Others Held Steady
Per Houston Public Media's reporting, U.S. emissions grew because of increased electricity demand and Trump administration policies supporting fossil fuel burning. The administration ordered coal-fired power plants to stay open longer than planned, rolled back vehicle fuel-efficiency standards, and ended tax credits for solar and wind projects, the outlet reports. The same report found that G20 economies produced 76 percent of all global greenhouse gas emissions in 2025, with their combined output — excluding land use — rising 0.7 percent for the year, according to Trending Topics.
Inger Andersen, executive director of the U.N. Environment Programme, said people are scrambling regarding energy security, according to Houston Public Media's account, pointing to oil and gas disruptions stemming from the wars in Ukraine and Iran. Andersen also said several G20 members have sustained emissions reductions despite those pressures — the European Union, the outlet reports, invested in energy-efficient appliances and renewable electricity including wind and solar, partly in reaction to Russia's invasion of Ukraine.
Washington's Response: No Comment, No Participation
The Trump administration has withdrawn the U.S. from the 2015 Paris climate agreement and is working to remove the country from all U.N. climate work altogether, Houston Public Media reports, arguing that the international system imposes unfair burdens on Americans. The U.S. Environmental Protection Agency now says greenhouse gases do not pose a threat to human health and welfare, reversing its own prior position. That reversal followed a February 12 rule in which EPA Administrator Lee Zeldin formally rescinded the 2009 Greenhouse Gas Endangerment Finding and repealed federal motor vehicle greenhouse gas standards, according to Holland & Knight, ending a legal foundation for federal greenhouse gas rules that had stood for 16 years.
According to Houston Public Media, the U.S. government said it does not endorse or agree with the report's analysis or conclusions and did not provide comments, while the State Department did not respond to the outlet's questions. The EPA's power-sector rollback followed a similar pattern: in September, the agency finalized a rule repealing Biden-era carbon limits on coal- and gas-fired power plants, leaning on the Supreme Court's 2022 West Virginia v. EPA ruling that restricted federal authority over grid-wide fuel shifts, as Hoodline previously reported. Those repealed 2024 rules had required coal and new gas plants to cut or capture 90 percent of their carbon emissions by 2032.
The Widening Gap Between Pledges and Reality
U.N. Secretary-General António Guterres said all countries, especially big emitters, must do more, and that every fraction of a degree matters, according to Houston Public Media. Under current national policies in place as of October 2026, the report projects global temperatures will rise by 2.8 degrees Celsius by 2100; even if every country fully implemented its current climate pledges, warming would still reach 2.6 to 2.7 degrees Celsius, according to UN News. The Paris Agreement had pledged to hold warming well below 2 degrees Celsius.
To limit peak warming to between 1.7 and 1.8 degrees Celsius by mid-century and bring temperatures back down to or below 1.5 degrees Celsius by 2100, global emissions must fall 18 percent by 2030, 45 percent by 2035, and 69 percent by 2040 relative to 2025 levels, per UN News. Houston Public Media frames the same math more simply: emissions must fall roughly 25 percent in the next decade just to keep warming below 2 degrees Celsius, and countries are falling behind that goal. About two-thirds of countries have submitted formal, up-to-date Paris Agreement plans, the outlet notes, which collectively would cut emissions only about 15 percent in the next decade if every signatory follows through.
What It Would Take to Undo the Overshoot
Reversing the overshoot and bringing temperatures back below 1.5 degrees Celsius by century's end would require permanently removing and storing roughly 320 gigatonnes of atmospheric carbon dioxide — equal to about eight years of 2024 global emissions — according to BusinessGreen, which notes that carbon removal at that scale remains technologically unproven. Fossil fuel burning releases carbon dioxide and other greenhouse gases that trap extra heat, warming a planet that is already about 1.5 degrees Celsius warmer on average than in the mid-1800s, per the World Meteorological Organization as cited by Houston Public Media — a shift already driving deadlier heat waves, floods, intense storms, and wildfires. Warming beyond 2.8 degrees Celsius this century, the U.N. report warns, would bring catastrophic consequences including massive sea-level rise and mass extinction of plants and animals.
Turkey Summit Looms Without US at the Table
Global climate talks will begin in less than a month in Turkey, where the 2026 UN Climate Change Conference, or COP31, is set to run from November 9 to 20 at the Anfaş Expo Center in Antalya, co-hosted with Australia and featuring a World Leaders' Summit on November 11 and 12, according to Wikipedia. World leaders there will discuss accelerating clean-energy investment and paying for climate-change costs, but the Trump administration will not participate, Houston Public Media reports.
With Washington stepping back from international climate tracking, some U.S. states have moved to fill the gap themselves. California, after federal reporting of climate pollution data to the U.N. stopped in 2025, began independently tracking its own greenhouse gas emissions in 2026, including new state tracking of methane emissions from water reservoirs, as Hoodline has reported. State law under Senate Bill 1383 mandates a 40 percent reduction in California's statewide methane emissions below 2013 levels by 2030, though that state-level effort does nothing to change the global trajectory the U.N. report describes.
