But when concrete sets, it does so via reabsorbing the CO2, right? So it should be a net neutral (minus CO2 from the fuel to cook the limestone in the first place).

CaCO3 + heat -> CaO + CO2 (in air)

Add water, get Ca(OH)2, which reacts with CO2 from air to set... back as CaCO3 and water..

Or did I miss something?

Oh no! Kids in Seattle must not have rotten teeth. The horror!

If you put the person controlling the drone inside the drone, it would fix the latency issue... oh wait.

Serbia managed to wipe out an F-117 with late 50's soviet SAM S-125.

Maybe iraq army was inept.

I guess the compound mustn't be 1:1 Ni:Co as written, as some site shows Co and Li being 10% of mass, and Ni 50%, for reasons I don't entirely understand.

In that case Ni is by far the biggest cost, and Cobalt is still a bigger share of the cost than lithium.

It must actually be a mixture of LiNiAlO2 and LiCoAlO2 or something like this? my distant highschool chemistry is failing me.

There is zero nickle in a Li-ion cell. Nickel, on the other hand exists in some variants.

Anyway, it looks like the model S uses lithium nickel cobalt aluminium oxide "NCA" LiNiCoAlO2. Aluminium is almost free. lithium compounds are cheap (looks like 5-7k per ton, depending on grade or compound) in comparison to the other metals. Nickel is 18k a ton, and cobalt double that yet.

Both nickel and cobalt weigh around 60g per mole, with lithium a tenth of that, so they also need roughly ten times the mass of nickel and cobalt per mole of LiNiCoAlO2. I guess the lithium is sold as LiOH, which is only roughly a quarter lithium by mass. So to make 1 ton of lithium worth of the compound, you'd need:

4 tons LiOH - $24k
10 tons Ni $180k
10 tons Co $360k
4t aluminium $8k

so the lithium seems to be pretty inconsequential to the overall cost. Mind you those are just metal prices, which I guess is technical grade. If the batteries require better refined metal it probably costs more yet. Then you need graphite for the anode, steel? case, and whatever else bits.

So it looks like the GP is right (barring forgetting cobalt), unless i'm missing something with the chemistry..?

5th highest rate of poverty in the country. I guess even being poor is bigger in Texas.

Sure, it's fine if you're a developer in Austin. But a lot of texas is... texas.

Russians have the innate ability to code.

So would anyone that had just been wronged by a criminal. That's why we have a judge and jury give out punishments, and not the victim or vigilantes.

I see your 100 billion and raise you 500 000 000 000

one new (1994) dinar was equal to 10^27 old (socialist yugoslavia) dinar, four years later. I guess a country disintegrating war and embargo will do that.

Why can't someone borderline insane be for the sterilization of the insane? Keep in mind that he had no partner or children, by choice... or barring that, that it's pretty common for people with an odd outlook to think of themselves as normal or proper.

Parts of Canada kept sterilizing mental deficients through the 70's, he would have been proud.