Scientists warn heatwaves will intensify for 1,000 years even after net zero

New climate modeling shows that heatwaves will keep getting hotter, longer, and more frequent for centuries—even after the world hits net-zero emissions. Delays of just a few years dramatically increase the likelihood of extreme, once-rare heat disasters, especially for countries near the equator. The research reveals that even reaching net zero by mid-century won't reverse the trend, and some regions will continue to see worsening heatwaves for a thousand years.