9 thoughts on âProtein Pile-up: Common Cause of Brain Diseaseâ. 1  Interesting article by Dr. Collins. 2  This is an exciting discovery and Iâll be looking forward and following new developments. 3  You make this sound like it is normally happening to everyone.
Summer months are pretty hot, especially at the bottom of the canyon, where it can be well over a hundred. The best hiking weather is generally April and May, and late September through October. But then, these are the hardest times to get backcountry permits. You would send your applicAtion on May 1 for a permit date any time in September.
Pay a winter visit to the Grand Canyon if you want a backcountry hiking permit. Because the crowds are smaller, the permits are easier to get. Although snow does fall occasionally, it rarely reaches the inner canyon area, where temperatures average 56 degrees Fahrenheit in winter.