Mary Cassatt's paintings of mothers and children are known for its fine linear rhythm, simple modelings, and harmonies of clear color.

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.

The ballad is characterized by informal diction, by a narrative largely dependent on action and dialogue, by thematic intense, and by stress on repetition.

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

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

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

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

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

The best American popular music balances a powerful emotions of youth with tenderness, grace and wit.

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