Financier Andrew Mellon donated most of his magnificent art collection to the National Gallery of Art, where it is now locating.

When the Sun, Moon, and Earth are alignment and the Moon crosses the Earth's orbital plane, a solar eclipse occurs. 

Plants synthetize carbohydrates from water and carbon dioxide with the aid of energy is derived from sunlight.

In the nineteenth century, women used quilts to inscribe their responses to social, economic, and politics issues.

Rainbows in the shape of complete circils are sometimes seen from airplanes because they are not cutting off by the horizon.

Although research has been ongoing since 1930, the existence of ESP - perception and communication without the use of sight, hear, taste, touch or smell - is still disputed.

Sleep is controlled by the brain and associated by characteristic breathing rhythms.

The manufacture of automobile was extremely expensive until assembly-line techniques made them cheaper to produce

Eleanor Roosevelt set the standard against which the wives of all United States Presidents since have evaluated.

Charleston, West Virginia, was named for Charles Clendenin who son George acquired land at the junction of tile Elk and Kanawha rivers in 1787.