The ubiquitous plastics of modern life are degrading into tiny fragments and littering Earth's landscapes and waterways. Scientists are starting to examine and measure this phenomenon to better understand how microplastics move through the environment and ultimately affect human and environmental health. A new study focuses on the Truckee River, which stems from the clear blue waters of Lake Tahoe and traverses Reno and Sparks, Nevada, before reaching Pyramid Lake. The research sought to illuminate the concentrations and types of plastics accumulating throughout the river—which supplies drinking water to nearly half a million people.