It transpires that Carbon Dioxide levels during some of the “hot house” periods of Earth history may have been relatively low.
Is it possible that hellish conditions could emerge from having a concentration of 1,000 ppm of Carbon Dioxide in the Atmosphere ?
Some projections have residual airborne levels of Fossil Fuel and deforestation emissions reaching that kind of count by the year 2100.
Are we willing to risk it ?
“Published online: 14 January 2010 : Insights from earth : Alicia Newton : Atmospheric carbon dioxide levels during some of the hottest periods of the Earth’s past may have been much lower than once thought. An analysis of soils shows that during eras of extreme warming 251 – 65 million years ago and 55 million years ago, carbon dioxide concentrations were similar to those anticipated for 2100 under a worst-case emissions scenario…”
You had no idea ?
Just conduct a simple thought experiment.
As you know, Fossil Fuels were laid down in Earth history when conditions were perilous to plant and animal life, which then died and got laid down in the strata, and chemically altered into Coal, Natural Gas and Petroleum Oil.
This process sequestered enormous quantities of Carbon in the Earth’s crust, keeping it out of the air.
As soon as mankind got out their shovels and started mining Fossil Fuels, we started to burn that Carbon right back out into the Atmosphere.
Naturally, putting all that Carbon in the sky again risks putting the Earth system back to where it came from : rather hot and dangerous to life.