We’ve all been there. You take your Segway out for a hoon in the desert, try to take a selfie and plummet into a ravine, breaking both your legs and rupturing your spleen. The vultures are circling, awaiting your last breath. And then you inevitably have to drink your own urine in an effort to survive the night because your water has run out. Well, Fontus, a seemingly magical self-filling water bottle that harvests moisture from the air, is here to save the day (in harrowing situations like this, during more normal outdoor activities and also in the developing world).