The way a child plays with other children reveals a lots about the child's emotional development.

Although the name suggests otherwise, the ship known as Old Ironsides it was built of oak and cedar rather than iron.

The type of jazz known as "swing" was introduce by Duke Ellington when he wrote and recorded "It Don't Mean a Thing If It Ain't Got That Swing."

The Yale Daily News is oldest than any other college newspaper still in operation in the United States.

Prior to an extermination program earlier this century, alive wolves roamed across nearly all of North America.

Never in the history of humanity there have been more people living on this relatively small planet.

Chemical compounds with barium, cobalt, and strontium are responsible to many of the vivid colors in fireworks.

Sapphires weighing as much as two pounds have on occasion mined.