VIDEO: Why do we laugh? Allow us to explain…

Laughter is, as Joe Hanson (PhD) reminds us, weird. We scrunch up our faces and make wheezing noises, and we do it all over the world - instinctively.

Why? Well, Joe's super-science web series, 'It's Okay to be Smart' is ready to help with the answer to that - with plenty of science puns along the way.