Ever wondered why OutKast's "Hey Ya!" can put a manic grin on your face? Or why Adele's "Someone Like You" makes you sob like a baby?

That is to say: it's a eukaryote (see the membrane-bound organelles?) plucking away at a ukelele while perched atop a cucumber.

Current estimates put the number of stars in the Milky Way at well over 100 billion, each of which is thought to have at least one planet in its orbit. Assuming at least some of these planets have given rise to intelligent life capable of communicating with Earth, why haven't we heard from them yet?

Joe Hanson, creator of the fantastic science tumblr It's Okay to be Smart, has a new YouTube science show by the very same name. He's teamed up with PBS to make it happen, and it sounds like they've got big things in store.