story Cathode-Ray-Tube TV Format Dying Slow, Quiet Death Associated Press Published October 23, 2006 3:27pm EDT | Updated January 13, 2015 10:04pm EST Flipboard ...

Cathode ray tubes, or CRTs, are made of heavy leaded glass, which is used to block harmful X-rays produced by the tube's cathode ray guns. The leaded glass is categorized as hazardous waste in ...