One year after the United States banned microbeads, the small plastic particles you might see in a face scrub, scientists are now turning their attention to microfibers, hairlike plastics in our clothing. Both types of plastic have been cluttering up oceans, rivers, and lakes. But clothing and personal care products aren’t the biggest sources of microplastics. Scientists are having a hard time finding out what these microplastics are and where they come from.
