I truly enjoyed the book I read that attempted to document every single death I and around the Grand Canyon. Hopefully it's still on the shelves of the bookstore there.

If you hang out on the rim remember that you can't sue the manucturer if you or your loved ones find out that the big hole in the ground can cause gravity poisoning if you fall. If you take the trails down from the rim bring water and be very conservative about your abilities, energy levels and so on. Leave the wildlife alone.

It was awesome each time I've been and I hope to go back again.

Noted recently (December 2016) that in that month alone there were two "gravity poisoning" events at the South Rim alone. Just another example that falling is one of the two main causes of outdoor fatalities. The other is drowning, and you can accomplish "hydraulic poisoning" at the Canyon as well.

Having worked a career with the NPS, I am aware of the tremendous range of outdoor knowledge, or lack thereof, in people who visit parks. All too many folks haven't the beginning of a clue about how to stay alive, much less safe, when out of the city.

I've always used "water overdose."

Good points ^ Upgrade your knowledge as well. ^