Earth’s atmosphere is made of 78% nitrogen (N2) and 21% oxygen (O2). The “consensus” view is N2 and O2 are not greenhouse gases (GHGs) and don’t absorb infrared radiation (IR). But scientists have been saying N2 absorbs and radiates IR since 1944 and more recent (2012, 2016) studies have found N2 and O2 are “radiatively important” greenhouse gases with IR temperature absorption capacities similar to CO2.

https://notrickszone.com/2020/02/10/scientists-oxygen-nitrogen-radiatively-important-greenhouse-gases-with-ir-absorption-temps-similar-to-co2/