Science & Medicine, Natural Sciences, Society & Culture, Technology

Chart Positions

Natural Sciences 6
Science & Medicine 14

Whether the topic is popcorn or particle physics, you can count on BrainStuff to explore -- and explain -- the everyday science in the world around us.

Why do most zippers say 'YKK' on the pull-tab?

March 19th, 2010

Episode 568 of 1055 episodes

Have you ever wondered why zippers often have the letters 'YKK' etched into them? Learn more about the Japanese company behind the tiny letters -- and the zippers -- in this episode.