
It’s Official: 2017 Was the Hottest Year Without an El Niño
The United Nations announced Thursday that 2017 was the hottest year on record without an El Niño event kicking up global annual temperatures. Last year’s average surface temperatures—driven by carbon dioxide and other greenhouse gas emissions—was 1.1 degree Celsius above pre-industrial times, putting the world on course to breach the internationally agreed “1.5°C” temperature barrier […]