Jonathan Drori: Why we don't understand as much as we think

Starting with four basic questions (that you may be surprised to find you can't answer), Jonathan Drori looks at the gaps in our knowledge -- and specifically, what we don't about science that we might think we do.

I certainly was stumped by all four questions... especially the one on: when a seed becomes a tree, where does most of the matter for the tree comes from? If like me you said the ground, then that means you got it wrong as well....