Earth Has Warmed 1.5°C Since 1700: Humans Are to Blame
Using ice core data from Antarctica, researchers have established a new pre-industrial baseline for global warming, dating back to the period before 1700. This new method reveals that humanity has already caused 1.49°C of warming by 2023, meaning the 1.5°C threshold, a critical benchmark in climate change discussions, has effectively been reached. This updated baseline offers a more accurate measure of human-induced warming, reducing uncertainty compared to the commonly used 1850-1900 reference point. The researchers believe this new approach will provide a more robust and scientifically defensible basis for evaluating progress towards climate goals.