The problem which I want to tackle is water. Most people don’t realize how little drinkable water there is in the world and without a way to convert water to something easily consumable the greater the risk is going to be to the world. The rising population and the overtaxing on already spread out resources are a consideration right now. Think about the problem we are having with oil and then imagine that not having it could kill you in a few days. This extrapolates the problem because controlling clean water and access to clean water is paramount. There are small devices which would work to clean water but these devices are too expensive for most people.
When you think about the bunkers that are built nowadays, one of the key items people stock up on is clean water. There is a reason for this, water contamination is an ancient and deadly tactic used during war. Most people shirk the idea that domestic terrorist could ever strike again and in such away, but it would probably be easier than taking over air planes. Water supply is vital to nation and economy, when we look at third world nations we can see that most of them have problems because they do not have access to water.