In The Science of Water Sustainability, TechKnow explores three solutions for water scarcity that don’t involve waiting for rain: fog-catching nets, intelligent watering and water-efficient washing machines. TechKnow talks to Steve Jenkins, the chief technology officer of Xeros. His company’s washing machines use up to 80 percent less water, instead relying on recyclable polymer beads. “This machine here is saving $72,000 a year… from low water, low energy, low chemical,” says Jenkins. Read more.