Support WBUR2019 Was The 2nd-Hottest Year On Record, According To NASA And NOAAPlay02:29Download AudioRebecca HersherJanuary 15, 2020 ShareFor decades, the Earth has steadily gotten hotter. The planet has already warmed about 1.8 degrees Fahrenheit (or almost 1 degree Celsius) compared with in the mid-20th century. (AP)
