Why cans, pizza, and manhole covers are round.
Why one and two weren’t considered numbers by the ancient Greeks.
Why squares show up so often in goddess art and board games.
What property makes the spiral the most widespread shape in nature, from embryos and hair curls to hurricanes and galaxies.
How the human body shares the design of a bean plant and the solar system.
How a snowflake is like Stonehenge, and a beehive like a calendar.
How our ten fingers hold the secrets of both a lobster and a cathedral.
And much more.