WILLOUGHBY, Ohio - Like a lot of folks, Mark Studer likes to cap off a hard day of work with a beer. But in his case, it's more like 330 beers. That's about how many bottle caps it takes for Studer to ...

Next time you crack open a beer, take a look at the cap; the 21 serrations aren't random. It was over a century of engineering and practical testing that made 21 the "magic number" for sealing, safety ...