fyi https://www.climatecentral.org/gallery/graphics/keeling_curve
Think about it from a deep time perspective. a few hundred thousand years ago there were periods of a tropical global climate and high atmospheric O2 levels and very high CO2 levels. Life thrived, in the seas and on the land and the huge percentage of their bodies contained lots of Carbon. The second most common element after oxygen’s 65%, then comes carbon at 18.5. Many primitive creature had much higher percentages, plants contain even more carbon. Planets pull the carbon out of the air, when those plants and animals get buried and piled up the way they were for millions and million and millions of years, that carbon was being sequestered into rocks within Earth.
We are releasing millions of years worth of sequestered sunshine into the atmosphere.
Atmospheric CO2 is an insulating agent. We are increasing our planet’s insulation radically much, in radically short span of time, there will be consequences.
A brief history of the Earth's CO2
By Prof Joanna HaighCo-Director, Grantham Institute
19 October 2017
https: //www _ bbc _ com/news/science-environment-41671770
Climate change has been described as one of the biggest problems faced by humankind. Carbon dioxide is is the primary driver of global warming. Prof Joanna Haigh from Imperial College London explains why this gas has played a crucial role in shaping the Earth’s climate.
The Last Time CO2 Was This High, Humans Didn’t Exist
By Andrew Freedman
May 3rd, 2013
https: //www _ climatecentral _ org/news/the-last-time-co2-was-this-high-humans-didnt-exist-15938
The last time there was this much carbon dioxide (CO2) in the Earth’s atmosphere, modern humans didn’t exist. Megatoothed sharks prowled the oceans, the world’s seas were up to 100 feet higher than they are today, and the global average surface temperature was up to 11°F warmer than it is now.
As we near the record for the highest CO2 concentration in human history — 400 parts per million — climate scientists worry about where we were then, and where we’re rapidly headed now.
According to data gathered at the Mauna Loa Observatory in Hawaii, the 400 ppm mark may briefly be exceeded this month, when CO2 typically hits a seasonal peak in the Northern Hemisphere, although it is more likely to take a couple more years until it stays above that threshold, according to Ralph Keeling, a researcher at the Scripps Institute of Oceanography.
That was 2013 today we are at 412ppm
https: //www _ co2 _ earth
For the long version https: //www _ youtube _ com/watch?v=RffPSrRpq_g