If you watch an amazing performance, what do you do? If you're a polite member of society, you likely clap your hands (or give a "woo!"). But why do we clap our hands together to show approval? As it turns out, clapping is a learned behavior. Babies will clap when they discover that their hands can make a fun noise, but parents must teach them to clap for enthusiasm.
Some say clapping goes back to the dawn of humanity, while others points towards documentation in the Bible. Uncover other theories in the following video.