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submitted 11 months ago by throws_lemy@lemmy.nz to c/technology@lemmy.world
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[-] deegeese@sopuli.xyz 9 points 11 months ago

Fissionable isotopes are yet another nonrenewable fuel.

Hydrogen is the most abundant element in the universe.

[-] sunbeam60@lemmy.one 6 points 11 months ago* (last edited 11 months ago)

With reprocessing, which we already do, and new Gen IV power plants, there’s enough energy to last us thousand of years with currently known resources. And that’s before we start scooping it out of the water.

[-] Brainsploosh@lemmy.world 1 points 11 months ago

That's assuming a lot of ifs resolve our way, and without power needs increasing. It's more sustainable than coal/gas/oil for sure, but with current energy development needs it's barely long term (IIRC about 60-140 years)

Also, on centuries timescale, we will need to find more fissiles in space. And according to our current understanding of the universe, they should be quite rare, especially compared to hydrogen.

Basically, figuring out fusion power would solve our needs for the first level on the Kardashev scale, and has the potential to be portable fuel for the rest of the lifespan of the universe.

[-] sunbeam60@lemmy.one 1 points 11 months ago

My aim is not to stop research on fusion - just making the point that we know how to do nuclear and it seems to me we are letting perfect be the enemy of good.

[-] Brainsploosh@lemmy.world 2 points 11 months ago

Oh, we need both for sure, and renewables as well.

[-] sunbeam60@lemmy.one 1 points 11 months ago

Then we are in remarkable agreement. Nuclear, fusion and TONNES of renewables. The quicker, the better.

this post was submitted on 01 Dec 2023
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