Scientists have warned that the world is nearing a "point of no return" for runaway global warming, which could trigger a series of climate tipping points and irreversible changes, leading to a "greenhouse Earth" climate much worse than the 2-3°C targets aimed for globally. Despite a current temperature rise of 1.3°C, extreme weather events are already devastating lives and economies. Researchers noted that while it may be difficult to quickly cut fossil fuel use, failure to act soon could lock the planet into an uninhabitable climate even if emissions are eventually reduced.
Dr. Christopher Wolfe emphasized the unpredictability of these tipping points and the urgency for preventive measures. The study, published in One Earth, highlights that global temperatures are at levels not seen in 125,000 years and that carbon dioxide levels are the highest in at least 2 million years. Key components of the Earth system, including the Greenland and Antarctic ice sheets, are showing signs of instability, with the potential for severe consequences if trends continue.
Professor William Ripple stressed the importance of immediate action to prevent catastrophic climate outcomes, as significant feedback loops could exacerbate global warming. The findings underscore the insufficient current efforts to combat the escalating climate crisis, with risks of reaching a climate state that could make large portions of the planet uninhabitable.
