Why is it that mostly Europeans and Australians are asking questions in the "Green Living" category?

I can tell by the talk of "rubbish" and "trash taxes" and "light bulb certificates", that most of the people in the "Green Living" section of "Yahoo! Answers" who are trying to live a greener life are not Americans. Where are my fellow Americans, and why are we so slow to start making green living a priority? Why do other parts of the planet "get it", but the most wasteful part of the planet does not??