I have that one too. I heartily recommend it. It has a really good explanation of how much food (or extra padding <img src="images/graemlins/wink.gif" alt="" /> ) you need in cold weather.

I also liked it that they pointed out that "low impact" camping is really "displaced impact". Not that I think we should be allowed to go chop down trees in National Parks, but it's good to be reminded that a compact white gas stove isn't necessarily any friendlier to the environment than a wood bonfire.