Rising global temperatures, largely driven by the burning of fossil fuels, are altering ecosystems such as forests, wetlands, and tundra. These changes are causing natural systems to release more greenhouse gases, which could worsen global heating by up to 30%, according to a recent study. As the planet warms, permafrost in high-latitude regions is thawing, wildfires are becoming more intense, and lakes are warming. These processes are releasing methane and carbon dioxide that were previously locked in soil and vegetation, further intensifying the climate crisis. Scientists have long recognized these "feedback loops," where natural processes amplify the effects of human-caused emissions, but these natural sources are rarely included in climate projections. The study suggests that these natural emissions could increase global temperatures by an additional 0.2°C to 0.4°C by the end of the century, depending on how aggressively countries reduce their emissions. Even small temperature changes can significantly increase the risk of extreme weather events like heatwaves, floods, and droughts. The United Nations recently acknowledged that the world is likely to exceed the 1.5°C temperature limit set by the Paris Agreement in the coming years, leading to more frequent and severe climate impacts. However, the new research indicates that current climate models may underestimate the total amount of warming due to the omission of emissions from natural sources. These include methane and carbon dioxide released from melting permafrost, wetlands, freshwater bodies, and wildfires. Sam Abernethy, a lead scientist on the study, noted that these findings highlight a "hidden multiplier" that is not included in current climate policy models. This could mean that the amount of carbon we can still emit before reaching dangerous warming levels is lower than previously thought. The study shows that while human-caused emissions remain the primary driver of climate change, natural processes are increasingly contributing to global warming. Rob Jackson, a co-author of the research, emphasized that these changes are now visible in "real time" and should be incorporated into future climate policies. Without such changes, meeting global climate goals will become increasingly difficult. Scientists have long warned about the risk of crossing "tipping points" in the climate system, such as the melting of major ice sheets, the collapse of ocean currents, or the transformation of the Amazon rainforest into a dry savannah. These changes could trigger a runaway climate scenario where warming continues even without further human emissions. The new research highlights that reducing fossil fuel emissions can still limit the amount of additional warming caused by natural sources. Under the most optimistic scenario, where emissions are cut rapidly, natural sources would add about 0.2°C of warming by the end of the century. In a more pessimistic scenario with continued high emissions, this could rise to 0.4°C. Current government policies, however, are expected to lead to a global temperature increase of 2.6°C above pre-industrial levels, which would cause widespread disruption through rising sea levels, food shortages, and other consequences. Bill Ripple, an ecologist who has studied the risk of a "Hothouse Earth" scenario, called the new paper "important" and stressed the urgency of reducing fossil fuel emissions. He noted that while a runaway climate scenario is not inevitable, the research underscores the importance of every degree of warming and the need for swift action to avoid triggering further natural feedbacks.