Things You Thought You Already Knew

You might think you already know the correct way to sharpen a pencil or swat a fly, but the host of National Geographic’s show “Going Deep” begs to differ. David Rees teaches us how to fold a better paper airplane – among other things – on the air. Plus: digging into how each City Council member spends discretionary money in their districts; a look at why we don't know how much money businesses make on food stamps; and all the (many) ways data can be manipulated.