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xkcd : Earth Temperature Timeline
(imgs.xkcd.com)
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What is geoscience?
Geoscience (also called Earth Science) is the study of Earth. Geoscience includes so much more than rocks and volcanoes, it studies the processes that form and shape Earth's surface, the natural resources we use, and how water and ecosystems are interconnected. Geoscience uses tools and techniques from other science fields as well, such as chemistry, physics, biology, and math! Read more...
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Climate
Reduce emissions. That's cheaper, more effective and safer than any other method.
Geo engineering commonly only tries to fix temperature. While that would be a big achievement, it does not change the CO~2~ ppm. And that translates to ocean acidification. Which translates to mass extinctions. Which is still an existential threat also for land living species, and us.
There is only one solution to fix both (and many other, related / caused problems): Fix the source.
We cannot engineer our way out of all the individual symptoms. Just leave fossil fuels in the ground.
I don't think we can reduce emissions fast enough though. 2050 seems a long way away.
There are ways to capture carbon in seawater, kelp is the fastest growing I know of.
We need many solutions, not one.
Okay, that type of geo engineering is a good counter argument against my previous comment. It comes with other issues and does not solve all issues, but still, good point.
Thanks, good chat!
Rock dust is another promising option
https://www.theguardian.com/environment/2023/may/30/rock-flour-greenland-capture-significant-co2-study