Earth Won't Die as Soon as Thought \textbar Science \textbar AAAS

Abstract

The sun is gradually getting brighter and hotter, which will eventually cause Earth’s water to evaporate and end life as we know it. Recent climate models have revised estimates of this “runaway greenhouse” effect, suggesting that it will not occur for at least 1 billion to 1.5 billion years, hundreds of millions of years later than previously predicted. These models incorporate more realistic factors, such as clouds and regional variations in moisture, leading to a slower warming rate. The revised estimates imply a longer lifespan for Earth and suggest a larger potential for habitable planets around sun-like stars. However, the models still assume constant carbon dioxide levels, and the actual timescale could be even longer if natural carbon sequestration processes accelerate. – AI-generated abstract