Dean Kamen's slingshot water purifier:
Inside the big red box sits a smaller one, about the size of a dorm fridge, called a Slingshot.
It was developed by Kamen, the mastermind behind dozens of medical-equipment inventions and, most famously, the Segway personal transportation device.
Kamen is the closest thing to a modern-day Thomas Edison. He holds hundreds of patents, and his creations have improved countless lives. His current projects include a robotic prosthetic arm for DARPA and a Stirling engine that generates affordable electricity by using “anything that burns” for fuel.
The Slingshot, more than 10 years in the making, could have a bigger impact than all of his other inventions combined.
Using a process called vapor compression distillation, a single Slingshot can purify more than 250,000 liters of water per year, enough to satisfy the needs of about 300 people. And it can do so with any water source—sewage, seawater, chemical waste—no matter how dirty.