Planet's vital signs show record degradation, with CO2 levels and glacier melting accelerating. Scientists warn of irreversible climate tipping points.
Scientists assess Earth's health
Scientists have evaluated the planet's condition, revealing significant and alarming findings about the state of the Earth's climate and environment. Their study, published in the journal BioScience, highlights multiple "vital signs" of the planet that are reaching record levels of degradation.Carbon dioxide levels reach unprecedented heights
In May 2026, the concentration of carbon dioxide in the atmosphere reached 428 parts per million (ppm), a level not seen for at least 2 million years, according to the study. Some other research suggests this level might be unprecedented for up to 14 million years.Global warming is accelerating
The rate of global warming has been increasing, with temperatures rising by about 0.05 °C per decade until the 1970s, then 0.19 °C per decade until 2010, and now up to 0.36 °C per decade in recent years. Scientists warn that if this trend continues, global temperatures could exceed 2 °C above pre-industrial levels before 2050.Multiple climate signals show severe deterioration
Several climate indicators are worsening, including glacier melting, ocean warming, and increased forest fires. In 2025, 10.8 million hectares of forest were burned—an area larger than Iceland—and this was the third most devastating year on record.Climate tipping points and feedback loops pose risks
Scientists are particularly concerned about the risk of crossing climate tipping points, such as the collapse of ocean currents or the transformation of the Amazon rainforest into a savanna. Additionally, feedback loops, like carbon released from melting permafrost or forest fires, could further accelerate global warming.Fossil fuel use continues to rise
Despite the urgent need for change, fossil fuel consumption increased by 0.9% in 2025, with gas, oil, and coal all reaching new records. The world crossed the threshold of 41 billion tons of CO2 emissions from energy consumption for the first time in 2025.Technical solutions are not enough
While renewable energy sources are growing and provided 43% of global electricity in 2025, the researchers emphasize that these alone are not sufficient. They warn that ecological issues are interconnected, and addressing one problem without addressing others will not lead to meaningful change.Systemic changes are needed
The study calls for "societal tipping points" to drive deep transformations in energy systems, consumption patterns, food production, economic priorities, and governance structures. Incremental changes are not enough, and the researchers argue that only comprehensive reforms will address the scale of the crisis.Signs of hope and collective action
Despite the dire outlook, the study highlights some positive trends, such as the growth of renewable energy and a decline in Amazon deforestation for the fourth consecutive year. The researchers suggest that collective actions, when multiplied across communities and institutions, can lead to broader societal changes and support for climate action.
