Prior to the industrial revolution the CO2 in the atmosphere was significantly less than today, around or under 250 ppm, so a bit of methane wasn't a problem. N

Prior to the industrial revolution the CO2 in the atmosphere was significantly less than today, around or under 250 ppm, so a bit of methane wasn't a problem. Now even the same amount of methane when added to the 410 or so ppm CO2 we have today and it becomes a problem. Of we can reduce atmospheric methane it takes off a bit of the pressure on us to reduce CO2 levels.