Yes, but I think the article is incorrect. If you go to the site and enter your city a and destination city c you get choices of tickets a->b and b->c not a->c->b. The latter can be cancelled by the airline if you try to get a round trip. I have always thought back to back ticketing is something different where you can get a quick turn around (during the week) by buying two separate tickets that stay over the weekend. I could be wrong about that, though.

Okay, but the GP was referring to a third destination that you don't use. That's what was incorrect.

Incorrect - that's back-to-back. "Hidden City" is when you buy two (or more) separate tickets. The first one starts at the source and the last one ends at your destination. The middle destinations are your hidden cities. Amazingly, sometimes this is cheaper than one ticket. One drawback - no checked baggage (without going to pick them up outside security and then recheck the bags for the next leg).

Rare Earth: Why Complex Life is Uncommon in the Universe
I found the chapter on plate tectonics very informative.

This can't be right: let's assume half of the 78 million are outside the center 1/3 of the galaxy where gamma bathes them. The volume we are talking about is 1000ly * pi * (100k^2-33k^2) = 28e12 cubic light years of volume? So we have about 700,000ly average distance between habitable worlds?

Note that Ubuntu Partners repository is still at update 21. You have to update manually to 22 right now. I found this information helpful in doing this: http://sites.google.com/site/easylinuxtipsproject/java

http://babelfish.yahoo.com/translate_txt

Oops, maybe not. Now. "angefressene Mitarbeiter" ="corroded coworkers". Has a nice ring to it, though.

Not quite. The current Indian reactors use Thorium instead of depleted Uranium to even the core temperature. Even the next generation AHWR reactor will only use Thorium as part of the fuel (from here: http://www.iaea.org/NuclearPower/SMR/smr-status.html):

'They cut the power.'
'What do you mean "THEY cut the power"? How could they cut the power, man? They're animals!?'