You're welcome! :-)

Looks like I owe you a serous apology and I am not too proud to admit that. My reaction was not quite my best one ever and, to be honest, immature. I did not know aout the reaction with hydroxyl radicals (yes, I do know what those are :-) ), and should indeed have informed myself before reacting. And spell checkers tend to to weird things, so I should have thought of that. Again, please accept my humble apologies, it was me who was totally wrong here.

As far as I can see, your knowledge of chemistry is on the level of that of a dead tapeworm. The single fact you don't seem to know that sulphurhexafluoride is one word says enough. Methane does not spontaneously convert to water and CO2, it has to be burnt for that to happen and (AFAIK) that does not happen when it floats around in the atmosphere. (OTOH, I can imagine it being burnt in lightning, but not in significant quantities. Note: I am not saying lightning is caused by burning methane :-) ).

So, taking this in consideration, I think the 'Insightful mod of your post is totally not deserved, since it looks like you don't know what you are talking about where it comes to methane. You DO have a bit of a point, though, about the other compounds in the atmosphere, but that is not what tfa is about.

As far as I know, Twitter does not change one letter in Trump's submissions, but only adds a link to a fact-checking site where people who are not too stupid to think can, if they want to, find out where Trump lied.
So you can still go to Twitter and view the President's submissions in the exact way he submitted them.

OTOH, I don't (even want to) use Twitter, so I might be wrong. -- In this I differ from Trump, who would never admit he could even possibly be wrong, and his devout followers, who, If Trump would eat a baby alive on camera, would still insist that it was the only right thing to do.

One mm = 10^-3m. 10^-6 x 10^-3m = 10^-9m = 1nm = one nanometer. I have no idea what a nanonometer should be, but it's hard to take you seriously with that gaffe :-).

Look who's talking! The US of A will never force their laws on anybody else....as long as everybody else just does as the US of A commands.

Nope, I did not commit a fix and (s)he did,
I was just commenting on the fact that most Windows adepts always go on about how easy Windows is supposed to be, contrary to Linux, where "everything has to be done by typing obscure stuff on the command line". That's all, no offense :-).

Wow, how lucky Windows users are, not having to use all sorts of obscure command line instructions!.... Oh wait...

And Big Pharma will have this patented (to never be seen again) in 3..2..1...

Anything that can really heal any illness is not profitable, it kills its own market. It's much more profitable to make products that fight symptoms of diseases, and preferably have some side effects of their own for which other stuff can be sold.
Don't ever think Big Pharma wants you to be(come) healthy!

If you read carefully, you might notice that these trains are electric, and that they use fuel cells to produce electricity that is stored in batteries and distributed from there. So no business with pressure etc. (But this is /., R'ing TFA is too much trouble....)

No, I am from the Netherlands, where it is pretty flat and where space is costly, so I replied from that perspective. If space is no problem and long enough slopes are available, the train solution might work.

To me it seems a bit of a time limited system. If energy is reclaimed by rolling the train down hill there are two options: Either the train has to go really slow or the ramp has to be really long if you want to reclaim that energy in a reasonable long time. I can't imagine that let's say 15 minutes is enough time to catch up with top demand, a train rolling for 15 minutes at some speed needs a long track and thus a lot of space. If the speed were 15 km/h you would need a ramp of almost 4 km, an hour would need about 16 km.

As a poster before me already mentioned, flywheels could do the same trick, take less space and are likely more efficiënt.

The higher current goes to the equipment the powerlines are connected to. But that current will not affect YOU in any way. However, if you happen to touch a low voltage line, the current through your body will be lower (Ohm's law) than when you touch a high voltage line. Hence, low voltage is safer.
Try taking the poles of a car battery (12V) in your hands and prodding your electrical outlet (110/230V) with two metal rods to feel the difference. Don't do it the other way round, chances are you won't be able to do the second experiment.
(And where is comes to current: your car battery is able to deliver >100A, while your outlet will be fused for about 16A (in Europe, 230V)).

Apparently you haven't (in good /. tradition) rtfa. The kids loved working on it and were interested in electronics. Both learned a lot of this project, had lots of fun and now know that thinking up something is not the same as instantly making it, and that for making it one has to make choices of what it can, and can't do.
All very useful in real life and none of it 'forced down' to them.

I have XS4All...not cheap, but good service (also NL here). They are not as good as Demon Internet was when they took it over, but still, they're good and I can recommend them.