Apart from the air being much drier here, it also seems much thinner. Calgary is at an altitude of about 3500 feet, and for the first day or two I noticed that I was getting winded after walking any distance.
I've been following the Mars Rover mission and the images that are being beamed back to Earth. So far there are only small b&w shots, but soon there should be high-res color panoramas. What a great start to 2004!