Scrapheap Challenge is a British television show where teams of contestants build a working machine that can perform a specific task, using materials available in a scrapyard. The series features teams of four or five members who are given ten hours to build vehicles or machines to complete a specific task, such as a trebuchet, or complete a racecourse whilst acting as a gyroscope. The programme ran for eleven series and was originally shown on Channel 4. The format was exported to the United States, where it was known as Junkyard Wars. The US show was also produced by RDF Media, and was originally shown on The Learning Channel. Repeats have aired on another Discovery network, the Science Channel.

TLC is an American cable television channel owned by Warner Bros. Discovery. First established in 1980 as The Learning Channel, it initially focused on educational and instructional programming. By the late 1990s, after an acquisition by the owners of Discovery Channel earlier in the decade, the network began to pivot towards reality television programming—predominantly focusing on programming involving lifestyles and personal stories—to the point that the previous name with "The Learning Channel" spelled out was phased out in favor of its initialism.