The U.S. Census Bureau has released new population data showing how much the nation and world has grown over the last year.

Take a break, play with letters and numbers, and stretch your grey cells. Come back every day to play a new game.

Employees install car components at an assembly line at a Ford manufacturing plant in Chongqing municipality, April 20, 2012. REUTERS/Stringer China's manufacturing activity expanded for a third ...