January 19 is National Tin Can Day. Yep, there really is a day for everything it seems. So why recognize this one? Well, we can’t pass up the opportunity for some hands-on learning! Tin cans are celebrated for the advancements they brought to food preservation in the early 1800s. Outside of their primary purpose, I’m thinking about celebrating the science of the tin can telephones. The Guinness World Record for the longest functioning tin can telephone is 796 feet!