Judging by the 26 billion views on over 2 million YouTube videos of them, one thing is certain: cats are very entertaining. But their strange feline behaviors, both amusing and baffling, leave many of us asking: Why do cats do that? Tony Buffington explains the evolutionary history behind some of your cat’s strangest behaviors.

Sing along with this popular Christmas song, an ode to a fondly remembered white Christmas that features a dreamy blanket of freshly fallen snow!

On the most fundamental level thinkable, what are things? Why are things? And why do things behave the way they do? Here is an introduction to particle physics, with all of the vocabulary you'll need.

Sandra Bullock gives us the scoop on her new family friendly film "Minions" and gives her best Minion impression.