Oh wow, I was way off. I got lost trying to map the locations to time zones, thinking they would map to A-X. I also got stuck on thinking of ET and figured the answer would be something like water or carbon.

Possibly. One could go on a reasonable tangent and get lost by over thinking this one. Sometimes the ones that are simple can be the most frustrating because you almost want it to be more difficult. And that is why this one is still just as formidable as the others.

This one might have been too easy, M.