Observations from both satellites and the Earth’s surface are indisputable — the planet has warmed rapidly over the past 44 years. As far back as 1850, data from weather stations all over the globe make clear the Earth’s average temperature has been rising.
In recent days, as the Earth has reached its highest average temperatures in recorded history, scientists have made a bolder claim: It may well be warmer than any time in the last 125,000 years.
Read more at the Washington Post.