The level of CO₂ in the atmosphere peaked globally at the mean of 426 parts per million in March, up from 423 ppm a year ago, and surpassed 430 ppm at the Mauna Loa Observatory in Hawaii. The ...

The site was far from alone. Experts stunned as weather station records data not seen in nearly 60 years: 'Its persistence ...

Iceland and Greenland recorded their hottest May temperatures ever—shocking scientists and challenging cold-adapted ...