I used to not worry about climate change. Now I do

Re:I used to not worry about climate change. Now I do by PheonixPharts on Sunday January 28, 2024 @09:08AM (#39165904)

The paleontologist Peter Ward has made a fairly compelling argument (in both academic research and the popular science book Under a Green Sky), that virtually all major extinction events are related to sudden rises in atmospheric CO2. A lot more happens when CO2 rises quickly other than it getting warmer. A major issue is it's impact on the oceans, which can become anoxic [0], causing them to emit hydrogen sulfide instead of oxygen. Such an event would be devastating to our current ecosystem.

> There won't be an extinction event.

This also ignores the fact that we are currently in the 6th largest extinction event in the history of life on this planet [1]. Elizabeth Kolbert's The Sixth Extinction is a great book on this (and the history of our understanding of species extinction as well).

So aside for being naive about the science, your comment reads a bit like claiming you don't think it will rain today while in the midst of being soaked in a massive rain storm.

0. https://en.wikipedia.org/wiki/Anoxic_event

1. https://en.wikipedia.org/wiki/Holocene_extinction

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Re:I used to not worry about climate change. Now I do by Geee on Sunday January 28, 2024 @11:23AM (#39167123)

That isn't true. 5 major exctinction events are related to giant volcanic eruptions. 7 are due to sea-level falls, and one is due to an asteroid impact. In all cases there might be a correlation to ocean anoxidation, but I doubt it as a cause.

Eocenic period had high CO2 levels, but it didn't lead to ocean anoxidation. In fact, at the end of the period, the eocene-oligocene exctinction event happened in connection with reduced CO2 and global cooling of the climate. [0]

[0] https://en.wikipedia.org/wiki/Eocene–Oligocene_extinction_ev...

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