Underwriters Laboratories

NPR's Adam Hochberg visits the organization behind those mysterious "U.L." labels found on just about every electrical appliance. Scientists at Underwriters Laboratories spend their days throwing toasters in bathtubs, knocking over barbecue grills and smashing giant pots - all in the name of safety.



Please keep your community civil. All comments must follow the NPR.org Community rules and terms of use, and will be moderated prior to posting. NPR reserves the right to use the comments we receive, in whole or in part, and to use the commenter's name and location, in any medium. See also the Terms of Use, Privacy Policy and Community FAQ.

NPR thanks our sponsors

Become an NPR sponsor

Support comes from