In my building in NYC the lights in the hallways are on all night. In Spain, you enter, you press the little button and the lights come on (they were previously off) and then hurry up the stairs, and bang! the light goes out before you get to your door. And you feel around for the button and you find it, but no, it is someone's door buzzer. Ooops, the sangria has gone to your head, and
you hurry upstairs and finally see the little light to turn on the lights and finally get up to your door.

Imagine all the electricity being saved in Spain. Compare the tiny cars to the hulking SUVs here. No wonder the US consumes a huge portion of the world's energy resources.

That's my thought's on the environment. This thread has outlasted the President's trip in Spain by more than a month.