From Newsgroup: talk.origins

https://www.sciencedaily.com/releases/2025/12/251221043231.htm

When CO2 methane levels were getting kicked around on TO and discussions
were about how much CO2 and methane humans were producing the estimates
from the last warm period got brought up with the puzzling fact that CO2
and methane levels may have reached higher levels last warm period
before the cold period started again. More ice melted, sea levels were higher, and the permafrost was likely producing just as much methane
last warm period as it is doing today.

Things crashed and the cold period began.

This article is claiming that warmer temperatures and higher CO2 levels trigger plankton blooms that remove CO2 from the atmosphere.

Sort of weird that our over production of CO2 may be one factor
contributing to the start of the next ice age.

This article seems to be talking about a period of time when oxygen
levels were lower, and not about the modern ice ages that started within
the last 3 million years. Snowball earth may have occurred 2.2 billion
years ago and oxygen generating photosynthesis had likely already
evolved but oxygen levels remained low. Another series of snow ball
earths occurred between 850 and 600 million years ago, and oxygen levels
were still lower than they are today, but phytoplankton had been around
for over half a billion years by this time. The article indicates that
it might not apply to modern times with higher oxygen levels.

Ron Okimoto

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