View full lesson: http://ed.ted.com/lessons/pizza-physics-new-york-style-colm-kelleher People love eating pizza, but every style of pie has a different consistency. If "New York-style" -- thin, flat, and large -- is your texture of choice, then you've probably eaten a slice that was as messy as it was delicious. Colm Kelleher outlines the scientific and mathematical properties that make folding a slice the long way the best alternative ... to wearing a bib. Talk by Colm Kelleher, animation by Joel Trussell.