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Comment Re:Now I'm confused ... (Score 4, Informative) 380

They have just found a cheap way to crack NH2 to N2 and H2 and are excited about that in combo with simpler fuel storage and transport - they are not focusing on the energetics of H2 or NH3 generation with the Haber-Bosch process here.
The point here is that to store Hydrogen you need 10,000 psi (http://en.wikipedia.org/wiki/Hydrogen_storage#Compressed_hydrogen) and Ammonia only needs 250 psi in a plastic container (http://en.wikipedia.org/wiki/Ammonia#Storage_information).
They are looking at the following problem
H2O+Energy->H2->H2-Storage->FuelCell->Electricity+H2O
and have worked out that they can do
H2O+Energy->H2,+N2+Energy->NH3->NH3-Storage->H2 +N2 without NOx->FuelCell->Electricity +H20
and what they are excited about is that NH3 storage and transport is a known and solved problem industrially and NH3 cracking is now cheap and clean. Now someone just needs how to work out H2O->H2->NH3 using solar and the problem is solved.

There is also the other issue that a H2 leak is benign or a quick fireball and that an NH3 leak will eat the noses and lungs of everyone nearby.... http://www.wral.com/ammonia-le...

Comment Re:I have tried (Score 1) 306

it's no parlour trick. For tasks like navigating down through an xml file, parsing boolean phrases like "a and (c or (d xor e)))", searching a folder system, navigating a tree, implementing Qucksort Algorithm, Towers of Hanoi, giving change with coins, etc have NO STACK OVERFLOW issues
Show me smarter ways of solving these problems.
A while loop can have a stack overflow if you forget to increment a counter. That's just bad programming - it doesn't mean a while loop is bad.

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