While there have been solar-powered water cleansing techniques for centuries, there hasn’t been a low-cost, high-volume mechanism available to the public until now. The $650 Desolenator doesn’t seem cheap at first, but with a 20-year lifespan and the ability to produce 15 liters of water per day with no moving parts, filters, or consumables, it is well worth the price. For more details and crowd-funding information, click here:: ‘Desolenator’ Can Turn Sunlight Into Drinking Water