2,5/5. Calling that a surviving guide is just wrong. It's more an informative book about some wild and extreme climate place around the world. It present some tips and way to live there, but not really surviving, drinking water and stay cool in the Sahara is a positive attitude for sure, but not surviving advice. It does have good information about those places, some animals living there, weather, geographical infos, etc. Not a bad book, but badly categorized!