time we had that many in the atmosphere was 4 to 5 million years ago, known as the plyocene era. i don't know much about it but it was 3 to 5 meters higher than today. yes, there were mammoths. so, pro a lot of mammoths, con, hot as can. with comparatively high sea levels with a sea level rise that doesn't matter today and doesn't a matter republicans because they're either so in the pocket of big carbon they want to deny it or as some might put it god won't allow us to ruin the earth. >> i was recently at a senate meet writing i heard a member of our senate community say, god won't allow us to ruin our planet. the statement that god won't allow us to ruin our planet