My initial reaction was utter surprise, i was flabbergasted that Leonardo even thought of environmental issues.  One could be skeptical and say that his work is no different then Angelina Jolie going to Africa and kissing babies, but I would beg to differ.  The website although aided by other environmental groups is comprehensive and quite informative, although i disagree with the environmental "activism" he suggests but that it is a completely different topic.  "Cities and Climate Change"  Although you could hardly call this an essay it more like a five hundred word blurb it is simple and his mind i believe is in the right place.  Simply the way everything on the site is presented I feel that we have one of the first true celebrity environmentalists and I am interested how this will turn out for him and for all of us.