The impacts of climate change are manifesting sooner than anticipated. However, both governments and businesses persistently underestimate the associated risks. These underestim ated threats could culminate in trillions of dollars in economic losses by the year 2050.
A recent report, authored by a collaboration of climate scientists and financial experts, issues a stark warning. It suggests that the world may have significantly underestimated the pace of global warming. Consequently, the planet faces the prospect of “planetary insolvency,” a condition where escalating global warming inflicts severe damage upon both the environment and economic growth.
Current decision-makers typically direct their attention to the more moderate projections of climate consequences. Yet, the report advocates for preparation against the most severe, worst-case scenarios. This recommendation stems from observations that certain impacts, such as short-term precipitation extremes in specific regions, are occurring with greater rapidity than previously forecast.
David King, a former chief climate adviser to the UK government and a contributor to the report, emphasized the urgency of the situation. “Governments need to agree on a planetary solvency plan quickly,” he stated. “We are observing an accelerated rate of temperature rise. While its continuation into the future remains uncertain, it is reasonable to assume this trend will not simply reverse.”
Sandy Trust from the Institute and Faculty of Actuaries in the UK, also an author of the report, proposed a foundational step for such a plan: abandoning the assumption of continuous global economic expansion. Data from the Network for Greening the Financial System indicates that global GDP could contract by 25 percent with 2°C of warming by 2050. Trust noted that this scenario could translate to annual economic losses of up to $25 trillion due to climate-related impacts. Nevertheless, the network anticipates that global economic growth will surpass these projected damages, thus precluding a recession.
“This approach resembles Titanic risk modelling,” Trust commented. “It’s akin to looking back from the deck of the Titanic in April 1912 and predicting a smooth voyage. Such methodology fails the fundamental principles of risk management, which requires an informed estimation of the worst possible outcomes.”
This urgent call for planning against the gravest possibilities arrives as a report from the European Union’s climate monitoring service, Copernicus, reveals that 2025 was the third warmest year on record. It followed 2023 and 2024, with an average temperature 1.47°C above pre-industrial levels. Given that 2024 registered 1.6°C higher, this marks the first time that the three-year average has exceeded 1.5°C above pre-industrial temperatures.
This trend represents another step towards breaching the Paris Agreement’s objective of limiting warming to below 1.5°C, a target typically assessed over a 20-to-30-year period. When the agreement was established a decade ago, 1.5°C warming was projected for 2045. However, if the trend of the last 30 years persists, Copernicus forecasts that this long-term threshold will be surpassed by 2030.
The rate of global warming has been accelerating. Many scientists attribute this acceleration to a reduction in sulfur-containing air pollution originating from coal power plants and maritime shipping. The resulting clearer skies mean that more of the sun’s heat reaches Earth’s surface, effectively “unmasking” approximately 0.5°C of previously obscured warming.
However, Samantha Burgess at Copernicus identifies the most significant factor for exceeding 1.5°C sooner than expected: the continued annual increase in emissions. Fossil fuel emissions reached a new record high in 2025.
“Emissions have not decreased as rapidly as many had predicted,” Burgess observed.
Each tenth of a degree of warming leads to more frequent and intense extreme weather events. For instance, the January 2025 wildfires in Los Angeles, potentially the costliest natural disaster in US history, were twice as likely and 25 times larger due to climate change. Hurricane Melissa, the most powerful storm to make landfall in the Atlantic Ocean region, exhibited wind speeds at least 16 kilometers per hour higher than would be expected in the absence of climate change.
“Because this represents a global average, the reality is that when we experience 1.5 degrees of warming globally, heatwaves can often be 3, 4, or even 10 degrees warmer than they would have been otherwise,” Burgess explained. “Children today will be exposed to more heat-related and climate-related hazards than we or our parents experienced.”
The most pronounced warming occurs at the Earth’s poles, a phenomenon exacerbated by feedback loops such as the diminishing reflective surface of snow and ice. This loss allows more of the sun’s heat to be absorbed. Last year was the warmest on record for Antarctica, attributed to an unusual stratospheric warming event. Concurrently, the combined sea ice extent in the Arctic and Antarctic regions reached a record low.
On a more positive note, global emissions are not escalating at their former pace, and China’s emissions have stabilized.
“Due to this stabilization of CO2 emissions, we anticipate that warming will continue, but without acceleration, simply at the same rate,” stated Timothy Osborn from the University of East Anglia in the UK.
King suggests that addressing methane leaks from infrastructure, such as gas pipelines and decommissioned coal mines, could offer a rapid short-term solution. A 30 percent reduction in methane emissions this decade could mitigate warming by at least 0.2°C by 2050.
“While all long-term solutions are necessary, this represents a critical component of the strategy,” King concluded. “Frankly, exceeding 1.5°C poses a significant challenge to humanity.”