Some environmental groups and legislators in California want the same thing for plastic bottles: They're pushing for a law that mandates caps be tethered or attached to bottles. You might call it a "tether in their cap." The goals are to cut back on cap litter that becomes marine pollution and to capture the caps for recycling.By some estimates, cap waste is prevalent. Beach cleanup surveys since 2014 from Ocean Conservancy consistently rank plastic caps the third or fourth most common piece of litter.
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