Don't Flush Your Contacts, New Study Warns

Approximately 14 billion contact lenses get discarded every year in the U.S., and about 3 billion are flushed down the toilet or put down the sink. A new study published by the Biodesign Institute at Arizona State University found that contacts do not biodegrade easily and make their way into surface water.

Here & Now's Peter O'Dowd speaks with Rolf Halden, professor, director of the Center for Environmental Health Engineering at the Biodesign Institute and one of the authors of the new study.