Quote Originally Posted by Gertgregoor
We all make methane but I believe CO2 is a more much powerfull green house gas than methane. Before there were Chlorophyta the whole atmosfere existed out of N2, C2H4,... The sky was even red because of the big amount of C2H4.
Methane is worse. Hence why rainforests pumping the stuff out turns the 'rainforests keep greenhouse gas levels down' thing upside down.