africa alaska aldo leopold amazon rainforest animal australia banff national park banff springs hotel big-game hunter bill mason biodiversity biology biosphere boreal forest conservation framework bridger-teton national forest british empire camping canada canadian pacific railway center for biological diversity chateau lake louise chinese painting climate commerce conservation conservation international conservation movement daintree rainforest david suzuki deforestation earth earth science ecological footprint ecology ecosystem edward abbey energy environmental education environmentalism ernest callenbach etymology evolutionary history of life fauna flora florida forest fungus gary snyder geological history of earth geology germany gifford pinchot global warming grassland great swamp national wildlife refuge henry david thoreau hiking howard zahniser human hunting john burroughs john constable john muir kieran suckling landscape art law life lifestyle los angeles manhattan matter michael pollan microorganism middle ages moral national wilderness preservation system natural environment nature new zealand old english outdoor education outer space planetary habitability plant plate tectonics privilege queensland recreation roderick nash royal national park sahara science sequoia national park shan shui sierra club silent spring smog species structure of the earth sydney taiga tang dynasty art technology the nature conservancy theodore roosevelt tibetan plateau tropical and subtropical moist broadleaf forests tropical rainforest conservation tundra united kingdom of great britain and ireland universe urbanization visual arts wild foundation weather western culture wikiquote wilderness act wildlife conservation society william cronon world conservation monitoring centre world wilderness congress wyoming