April 22nd is the 40th anniversary of Earth Day, which was started by Gaylord Nelson in Philadelphia to raise awareness about the environmental crisis, after he saw the effects of an oil spill off the coast of Santa Barbara. It is now celebrated on nearly every country on Earth.
Gaylord died in 2005, but his name lives on, especially at the Gaylord Nelson Institute for Environmental Studies at the University of Wisconsin, and also at the Gaylord Nelson Wilderness, although, great man as he was, I'm not sure I'd name my son after him.
The first photo is of one of my favourite wilderness camping areas on Earth: The Tuwaiq Escarpment, which runs through the centre of the Arabian Desert. The second is one of the few parts of the world still relatively unspoilt by man: the Rub' Al Khali, or Empty Quarter, which straddles Saudi Arabia and Oman, and which is equal in size to France, Belgium and the Netherlands combined.