[Rockhounds] The Human Brain Evolved When Carbon Dioxide Was Lower

[J Bryan Kramer]

1000 ppm eh? Well just think about this, 10,000 ppm is 1% and humans
can tolerate several percent CO2 (or 20,000 to 30,000 ppm) without any
problems. So this is a case of "lying with numbers" that the
Climanista religion types like to engage in.

BK

“ if government says, this you may not read, this you must not see,
this you are forbidden to know, the end result is tyranny and
oppression no matter how holy the motives..

For me, politeness is a sine qua non of civilization.”

Robert A Heinlein

J Bryan Krämer       North Florida, USA
photos at: http://pbase.com/photoburner

On Tue, Dec 24, 2019 at 9:31 AM Kreigh Tomaszewski <kreigh at gmail.com> wrote:
>
> Kris Karnauskas, a professor of ocean sciences at the University of
> Colorado, has started walking around campus with a pocket-size
> carbon-dioxide detector. He’s not doing it to measure the amount of carbon
> pollution in the atmosphere. He’s interested in the amount of CO₂ in each
> room.
>
> “I did this at home, just having fun with it, and in a bedroom overnight it
> can get over 1,000 parts per million very quickly,” he told me. Even *here*,
> he added—gesturing at the city-block-size basement of the Moscone
> Convention Center, filled with thousands of earth scientists milling about
> their discipline’s giant annual science fair—the CO₂ probably exceeds 500
> parts per million.
>
> The indoor concentration of carbon dioxide concerns him—and not only for
> the usual reason. Karnauskas is worried that indoor CO₂ levels are getting
> so high that they are starting to impair human cognition. In other words:
> Carbon dioxide, the same odorless and invisible gas that causes global
> warming, may be making us dumber.
>
> “This is a hidden impact of climate change … that could actually impact our
> ability to solve the problem itself,” he said.
>
> He proposed the idea last week at the American Geophysical Union’s fall
> meeting, the largest annual gathering of earth and space scientists in the
> world. He also previewed it in an online paper
> <https://eartharxiv.org/b8umq> written with Shelly Miller
> <https://www.colorado.edu/even/people/shelly-miller>, a
> mechanical-engineering professor at the University of Colorado, and Anna
> Schapiro <https://psychology.sas.upenn.edu/people/anna-schapiro>, a
> neuroscience professor at the University of Pennsylvania. The paper, while
> not yet peer-reviewed, was uploaded to a website where academics can
> discuss early-stage or provocative research.
>
>
> https://www.theatlantic.com/science/archive/2019/12/carbon-dioxide-pollution-making-people-dumber-heres-what-we-know/603826/
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