The Mesoarchean atmosphere contained high levels of atmospheric methane and carbon dioxide, which could be an explanation for the high temperatures during this era.
Atmospheric dinitrogen content in the Mesoarchean is thought to have been similar to today, suggesting that nitrogen did not play an integral role in the thermal budget of ancient Earth.
It took a lot of courage for him to befriend me in front of Hitler… You can melt down all the medals and cups I have and they wouldn’t be a plating on the 24-karat friendship I felt for Lutz Long at that moment. Jesse Owens about Lutz Long
They are even found in the atmosphere and one cubic metre of air holds around one hundred million bacterial cells.