Looking to continue conservatism while on vacation ? Besides the eco-friendly tours being offered, it is now also possible to find eco-hotels in urban landscapes that do more than bed bath and beyond of towel and sheet replacement (or not if you are conserving water).
The greening of the hotel industry addresses questions of renewable energy sources, conserving energy and water, avoiding the use of harsh chemicals, donating things, and supporting local causes and community conservation efforts. Good article on the subject in the New York Times here.
And if you are trying to identify a green hotel or check its rating go to environmentallyfriendlyhotels.com - the site lists 2800 hotels with comments.