Somewhere deep down, many of us have a desire to step out completely and leave the civilized world behind for a wilderness adventure. Smartphones, tablets, smartwatches, ready meals and running water are just a few of the many comforts that the modern world has in store for us and which push us back into our comfort zones again and again. Many of our readers probably know only too well the moment when the smartphone shows the last percent of the battery level and you panic, as if it were about the last drop of drinking water. In the modern world, we all know the solution to this: the charging cable. But what about the last drop of drinking water? How many of us would know how to get clean drinking water in the wild?
