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Cake day: March 17th, 2024

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  • What that link actually says:

    To the Ukrainians’ dismay, there was a crucial departure from what Ukrainian negotiators said was discussed in Istanbul. Russia inserted a clause saying that all guarantor states, including Russia, had to approve the response if Ukraine were attacked. In effect, Moscow could invade Ukraine again and then veto any military intervention on Ukraine’s behalf — a seemingly absurd condition that Kyiv quickly identified as a dealbreaker. Russia tried to secure a veto on Ukraine’s security guarantees by inserting a clause requiring unanimous consent.

    With that change, a member of the Ukrainian negotiating team said, “we had no interest in continuing the talks.”








  • If I’m understanding it correctly, it’s a case of:

    • NASA finds graphene on the moon
    • The moon is generally thought to have very little carbon, so the theory is that the graphene was introduced by meteorite impact
    • CNSA goes to check out a patch of the moon that is, relatively speaking, quite new. As such it should have received fewer meteorite impacts
    • CNSA still finds graphene, so that’s a mark gainst the meteorite theory
    • Due to the structure of the stuff that contains the graphene, it may be the result of volcanic processes. If this is the case, it’s possible that the moon is not as carbon-depleted as we thought.
    • If that’s true, it suggests that our theory on the formation of the moon could be wrong too, since we may have made incorrect assumptions about the composition of it

    So NASA found something interesting a while back and made a best guess based on the data available, and now CNSA found some more data that might change the prior conclusions. On the other hand it is still possible that NASA’s theory is correct, it’s not like anyone found a billions-of-years-old recipe for the moon. This new stuff just tips the scales against it a little.




  • I imagine this is kind of like steam engines right

    Yeah, exactly. That’s also how coal, gas, and nuclear power plants work too. Turns out that running steam through a turbine is just a really good way to make power.

    i expect this is just hydrogen?

    You actually can make other fuels with solar power too, and since they’re listing it separately from water splitting I think they might be doing that. It is possible to make hydrocarbon fuels out of CO2 and water (or mlre accurately, carbon monoxide and hydrogen) with the right combination of catalysts and energy. It’s an application of the Fischer–Tropsch process, which has traditionally just been used for converting coal or biomass into more useful forms. So if that’s what they’re doing, they’re taking carbon out of the air and hydrogen out of water and then combining those two into petrol and such, using solar energy for each step of the process




  • I don’t think this is what they are directly aiming for with this specific one, but this general idea of a large field of reflectors and a central receiver can be built to store heat for a while. That lets you use solar power overnight

    This sort of solar power generally doesn’t compete successfully with regular solar panels in cost, and obviously it can’t just be set up on a bunch of random roofs like panels can. Still, it’s potentially a very useful technology if someone does work out how to make it a bit cheaper or more efficient, and it still generates clean power in the process too