The last 12 months were the hottest on record

About 1 in 4 people experienced a climate change–driven heat wave at least five days long

This image shows a man in Houston wiping sweat from his brow amid a record-breaking heat wave in June.

Andres Matamoros wipes sweat from his face as he sells fresh fruit from his roadside stand in Houston, on June 28, amid a record-breaking heat wave in the city.

AP Photo/David J. Phillip

The last 12 months were the hottest in 150 years of recordkeeping — and probably in the last 125,000 years — thanks to human-caused climate change, a new report finds.