A new study showed that blue jeans are polluting the environment. Every time we wash clothes, small pieces come off the fabric (布料). As the material used to make blue jeans is chemically treated, the microfibers released by blue jeans can be harmful to the environment. And scientists found that a pair of jeans will release 56,000 fibers on average when they’re washed, MSN reported. Those fibers are so small that they can pass through sewage (污水) treatment plants and find their way into waterways, posing a threat to sea life. Scientists have even found microfibers from blue jeans in remote Arctic waters.