This Week in Water for June 30, 2019

Should We Worry About Contrails After All? That story and more on H2O Radio’s weekly news report about water. Contrails form when water vapor condenses around soot from an airplane’s exhaust and freezes to form cirrus clouds. Researchers have discovered a new form of plastic pollution—"plasticrust." A new study shows that atmospheric rivers have become much warmer during the past 36 years, and that could reduce water supplies. During drought, are trees frugal with their water? There's new technology that can "unprint" a piece of paper—and it saves a lot of water.