Air temperature in 2018 at a height of two meters, compared to 1981–2010 average. Data from the Copernicus Climate Change Service shows that 2018 was the fourth in a series of exceptionally warm years, with atmospheric CO2 concentrations continuing to rise. Source: Copernicus Climate Change Service, ECMWF

How we know the Earth is warming and humans are responsible

By Dana Nuccitelli, May 1, 2020

https://thebulletin.org/wp-content/uploads/2019/06/Temp_differences-150x150.jpg
https://thebulletin.org/wp-content/uploads/2019/06/Temp_differences-150x150.jpg

Air temperature in 2018 at a height of two meters, compared to 1981–2010 average. Data from the Copernicus Climate Change Service shows that 2018 was the fourth in a series of exceptionally warm years, with atmospheric CO2 concentrations continuing to rise. Source: Copernicus Climate Change Service, ECMWF

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