To get a song out of your head, try doing something like a puzzle or Sudoku.
13
An Australian study found that homework is of little to no academic value to students in elementary and junior high schools.
32
An iceberg contains more heat than a lit match.
73
The search engine Google got its name from the word 'googol', which refers to the number one with a hundred zeros after it.
56
All the gold ever mined could be molded into a cube 60 feet high and 60 feet wide.
38
The streets of Victor, Colorado, once a gold rush town, are paved with low-grade gold.
78
An ounce of platinum can be stretched 10,000 feet.
40