They're floating away. Floating away? But how? Did you ever wonder why hot air balloons float? You may already have some ideas. Think about them and then choose one of the options below that seems ...

I'm reading Randall Munroe's book How To: Absurd Scientific Advice for Common Real-World Problems. I probably don't have to tell you this, but it's awesome (as is everything from Randall Munroe ...

First of all, we'd better look at how balloons are released. When helium filled balloons are handed out at public events, they usually come with a piece of string ... a balloon floating in the ...