I think it was the U.N. itself that admitted that about 4% of the CO2 increase is manmade. One volcano eruption can outstrip everything we’ve done in the last 100 years. But it’s not as if CO2 is even a danger anyway. During the age of dinosaurs, 100 million years ago about, CO2 levels were 5 to 6 times higher than today, and life was much more abundant as a result. Warmer temperatures, yes, but life adjusts. The greatest danger is too little CO2. Around a billion years ago the earth was a snowball because CO2 was too low. Life almost ended completely then. Luckily, the oceans didn’t completely freeze and a few bacteria survived.
You are perfectly correct. 635 million years ago glaciers blanketed the globe all the way to the equator in one of the mysterious “Snowball Earth” events geologists think occurred at least twice in Earth’s ancient past. Now, scientists have found that the final snowball episode likely ended in a flash about 635 million years ago when carbon dioxide emitted by ancient volcanoes may have triggered a greenhouse event, causing the ice sheets to thaw rapidly.
Scientists say the Ice-age cycles are primarily driven by periodic changes—Milankovitch cycles—in the Earth’s orbit. Who says that these changes in the orbit can’t cause a warming? Why is this information not being discussed by our media? Hint: A four-letter word, Marx.