<P> An off - screen narrator explains each process, often with humorous puns . Each half - hour show usually has three or four main segments, with each product getting a demonstration of approximately five minutes; exceptions are allowed in the allotted time for more complex products . Usually, every show has at least one product with a historic background note preceding it, showing how and where the product originated, and what people used before it . </P> <P> In April 2007, all episodes run in the United States (on the Discovery Channel and Science) had the individual season openings replaced with a new opening used for every episode . Similar to most other Discovery Channel shows, the credits now run during the last segment, with only a blue screen and the request for feedback (and the website) at the end . </P> <P> In September 2007, the ninth season began airing on Science, along with new openings, graphics, and soundtracks, and Zac Fine replaced Brooks T. Moore as the narrator . However, the eleventh season, which started airing in September 2008, reinstated Moore as the narrator and reverted to a previous title sequence and soundtrack . </P> <P> In June 2008, the Science Channel added How It's Made: Remix, which consists of previous segments arranged into theme installments like "Food", "Sporting Goods", and such . In 2013, the Science Channel added How It's Made: Dream Cars, which focused exclusively on high - performance and exotic cars . These were later shown on the Velocity channel . </P>

Who narrates how it's made on the science channel