Cans make preserving and transporting food and drinks simple, but canning technology is very complex. Learn the history of pull-tabs and can openers in this episode of BrainStuff, based on this article: https://money.howstuffworks.com/food-cans-pull-tabs.htm

How Do Butterflies Get Their Brilliant Colors?
10:05

How Did William the Conquerer Transform England?
11:35

Could Dilophosaurus Really Spit Poison?
09:27