Diet Coke

Why Do Cans of Diet Coke Float While Regular Coke Sinks?

In high school, my physics teacher took two cans of soda from a vending machine, plopped them in an aquarium filled with tap water, and blew our minds. The Diet Coke can floated to the top, while the regular Coke sat on the bottom. Why?

If you like thinking things through, perhaps pause here and noodle on this one.

The answer is a real forehead-smacker: sugar. While…