Record-breaking solar still purifies water with clever geometry and … paper?
There is nothing new about the idea of using the sun’s energy to evaporate and therebypurify water. In fact, the idea was described by the Greek philosopher Aristotle more than 2,000 years ago. But researchers from the University at Buffalo School of Engineering and Applied Sciences have found a way to improve on this concept and sanitize water at what appear to be record-breaking rates. In doing so, they could help solve one of the world’s most important problems: The continued lack of access to clean water for a large number of people around the world....