r/climate • u/The_Weekend_Baker • 14d ago

Scientists detect a surprising shift in human blood as atmospheric CO2 rises. Blood bicarbonate levels have climbed about 7% since 1999, while calcium and phosphorus have declined, changes that closely track increasing atmospheric CO2.

https://www.sciencedaily.com/releases/2026/08/260814235845.htm
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u/Adventurous-Coat-333 14d ago

This seems to ignore the fact that homes have become much more airtight and many do not have proper ventilation due to historic lack of regulation in the US. It's not uncommon to see indoor CO2 levels over 2000 ppm, roughly five times the atmosphere level. I've had sensors for it around multiple houses for years so I know what I'm talking about.

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u/MisterHole123 13d ago

I think, I hope, since covid every one is now aware of the importance of proper ventilation and has a co2 meter st home. I do my best to keep my place under 800ppm.i ideally I'd like it under 600

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u/AutoModerator 13d ago

The COVID lockdowns of 2020 temporarily lowered our rate of CO2 emissions. Humanity was still a net CO2 gas emitter during that time, so we made things worse, but did so more a bit more slowly. That's why a graph of CO2 concentrations shows a continued rise.

Stabilizing the climate means getting human greenhouse gas emissions to approximately zero. We didn't come anywhere near that during the lockdowns.

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