It's the atomic number of calcium, the bill that features the face of Andrew Jackson, the number of units in a score, the number of faces in an icosahedron, the Super Bowl when the Chicago Bears defeated the New England Patriots...and the number of years that CNN Student News has been on the air.

We'd love to know what stands out to you the most from Friday's show - and what you think the world will be like 20 years from now!

Carl Azuz, Anchor