The Cambrian period had 7000ppm of CO2 in the atmosphere.

That was a time of the perpetual fire.

Even though the solar luminosity at the time was 4% weaker than today, the earth was much hotter due to the free amounts of carbon dioxide.

Slowly chemical weathering and living organisms bound the carbon in the atmosphere so, at the time of the Carboniferous period, it had reached 180ppm.

The earth was much cooler. A wonderful time with 34% oxygen in the air.

Then after this period, flood basalt eruptions, such as the Siberian traps and the Deccan traps released vast amounts of CO2, and this caused the earth to heat up again.

That was an inferno. 90% of all life died.

This followed by slow weathering out of CO2 and subsequent cooling.

When the CO2 levels are in low and balance the earth temperature change due to the Milankovitch cycles. During such period the climate always changes.

We even had ice ages during this period.

Now there is no flood basalt eruption at all. This time it is we humans who released the CO2 in the atmosphere. It took us one hundred years.

Earth will be warm. It will be hot.

(Source: youtu.be slash r7aZ6vqCk2E)

I just watched a news report
about ‘Direct-Air-Carbon-Capture’
which removes carbon dioxide (CO2)
from the Earth’s atmosphere
to reverse climate change:
Big fans **** in air
which is passed through liquid
which absorbs some carbon dioxide (CO2)
then the CO2 is extracted from the liquid
by chemical reaction to form
solid pellets of calcium carbonate,
thereby removing CO2 from the atmosphere.

One Direct-Air-Carbon-Capture (D-A-C-C) plant
can extract 1 megaton of CO2 every year
from the atmosphere –
which is equivalent to 40 million trees;
It would take 40,000 D-A-C-C plants worldwide
to stop further climate change.

I wonder
when will global society
become desperate enough
to avoid bad climate change events
like cyclones, droughts, floods
that governments will spend the money
to build these 40,000 plants
and save us all from climate change.