The youngest driver ever to win the Indianapolis 500 was 22-year-old Troy Ruttman in 1952. The oldest was Al Unser, who was nearly 48 when he won in 1987. Source: Indianapolis Motor Speedway

Every day, 144,000 vehicles cross the Brooklyn Bridge. Source: PBS.org

Sir Arthur Conan Doyle was born today in 1859. Source: The Chronicles of Sir Arthur Conan Doyle

Nearly 41 percent of U.S. teenagers aged 16 to 17 report having tried marijuana at least once, and 6 percent say they have tried cocaine. Source: National Center for Health Statistics

As one of the world’s largest office buildings, The Pentagon has three times the floor space of the Empire State Building in New York. Source: The Pentagon

Despite 17.5 miles of corridors it takes only seven minutes to walk between any two points in the Pentagon. Source: The Pentagon

In 2007, nearly four in ten (39.7 percent) of all births were to unmarried women, more than double the proportion in 1980 (18.4 percent). Source: National Center for Health Statistics

From the 1990 Census to the 2000 Census, the percentage of Americans who said they worked from home went up 0.3 percent. Source: Census Bureau

From the 1990 Census to the 2000 Census, there was little change in the transportation Americans used to get to work: The percentage who drove alone went up 2.5 percent, and those using public transportation went down 0.5 percent. Source: Census Bureau

Cherrapunji Assam, India, has amassed several world records for precipitation. In two years, 1860 and 1861, it recorded 1,605.05 inches. Source: NOAA