A good video from Tactical Rifleman to bookmark for those who want surival tips especially on getting clean water... "When people talk about survival, they tend to focus on making fire. That’s fine, as I tend to enjoy setting things on fire almost as much as blowing things up. However, for this video, I wanted to cover purification of water. Yes, if you’re really sucking, you can drink dirty water and worry about getting sick down the road (as opposed to dying of dehydration).