Is the airport in Mexico City...composting?

I flew into Mexico City yesterday, and almost nothing made me happy about that airport.  After waiting in line for 45 minutes at the immigration line, I finally got my luggage, which I had a feeling was about to go into the unclaimed luggage pile.  Going through customs was actually really easy, but when I got out of there, I was bombarded by guys asking me if I needed a taxi.  They were probably right in asking because I'm sure I looked pretty damn lost...and as a tall girl with red hair, I stood out pretty well, too.  The restaurant where I was supposed to meet someone had apparently changed names, so I walked up and down the same corridor 4 times where the same guys asked me if I finally needed a taxi.  I finally asked information, and she confirmed that the restaurant had changed names, and I was actually standing right next to it.

Ok I'm getting off track, but the one thing that made me really happy about the airport was that I noticed all the trash cans had two compartments, labeled "inorgánico" and "orgánico."  That's right, the airport in Mexico city actually composts!  Apparently Mexico City is behind this effort, which isn't going that well so far, but at least they're trying.  Also interesting: there was a noticeable lack of "advertising" for their composting program.  Certainly, if a U.S. airport started composting, there would be some cheezy signs around saying something like "We're going green!  Help us compost!"  But there was none of that, for better or for worse...

I've never seen composting in any city in the U.S., but maybe it's out there somewhere.  Southwest airlines started including recycling bins at their gates, so I guess they're trying too, but I don't know how much success they're having.  It seems like composting would be a lot easier to control and implement, but maybe I'm wrong.