this post was submitted on 10 Aug 2023
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politics

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[–] jordanlund@lemmy.one 61 points 1 year ago (9 children)

I'm surprised they didn't mention a key tipping point I've been following: melting permafrost.

It's dangerous because once all the permafrost in Alaska, Canada, and Russia starts melting, the gasses it releases are a self fulfilling prophecy. The warming caused by permafrost melt is enough to keep melting permafrost.

Good report on the dangers here:

https://news.un.org/en/story/2022/01/1110722

Current estimates are that an increase of just 1.5°C in global temperatures over average would be enough to hit this tipping point and we're already at +0.8.

https://worldbusiness.org/permafrost-the-climates-tipping-time-bomb/

Continuing to increase at a rate of 0.08°C per decade means we'll hit this in approximately 80 or 90 years? Except that, since 1980, we've been warming at a rate of +0.18°C per decade, so we should hit the tipping point by 2062, tops.

Eh, what do I care, I'll be 93 years old, assuming I'm not already dead by then. :)

https://www.climate.gov/news-features/understanding-climate/climate-change-global-temperature

[–] littlewonder@lemmy.world 21 points 1 year ago (1 children)

Oh, if you want to pee your pants, watch the Arctic Sinkhole episode of Nova that's available on the PBS Nova YouTube right now. Terrifying examination of the current state of permafrost.

[–] salient_one@lemmy.villa-straylight.social 13 points 1 year ago (2 children)

Is this the one? Thank you for the recommendation!

[–] PipedLinkBot@feddit.rocks 7 points 1 year ago

Here is an alternative Piped link(s): https://piped.video/watch?v=HvKpnaXYUPU

Piped is a privacy-respecting open-source alternative frontend to YouTube.

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[–] littlewonder@lemmy.world 3 points 1 year ago

Yep! They rotate full episodes of Nova in and out so I'm happy it's still up.

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