The globally averaged surface concentration of CO2 reached 420.0 ppm, methane 1,934 parts per billion, and nitrous oxide 336.9 parts per billion (ppb) in 2023.

The pace at which the concentration of CO2 in the atmosphere is increasing -- due mostly to the burning of fossil fuels -- has jumped three-fold in five decades, an international report said ...

There are laws, and executive orders … and “findings.” One of the most egregious examples of the latter – the 2009 ...

The amount of carbon dioxide in the atmosphere has been steadily increasing since scientists began routine measurements in 1958. At that time, the CO2 concentration in the atmosphere was 313 parts ...