Tiny specks of degraded plastics have been documented in the snowpack around Lake Tahoe — and in the lake itself. They have been found in the Las Vegas Wash. The phenomenon is not unique to Nevada. Microplastics, the end product of our plastic consumption, have been found in ecosystems across the world, even in remote areas. Microplastics are small — less than 5 millimeters — but they are not uniform. They can have different shapes and vary in size. Microplastics from clothing can appear as synthetic fibers, whereas degraded plastic from bags or water bottles might take on a different composition.