Several million points on the human body registers either cold, heat, pain, or touch.

An involuntarily reflex, an yawn is almost impossible to stop once the mouth muscles begin the stretching action

Although they reflect a strong social conscience, Arthur Miller's stage works are typical more concerned with individuals than with systems

Chocolate is prepared by a complex process of cleaning, blending and roasting cocoa beans, which must be grounded and mixed with sugar.

A smile can be observed, described, and reliably identifying : it can also be elicited and manipulated under experimental conditions.

The dachsund is a hardy, alert dog with a well sense of smell.

Turquoise, which found in microscopic crystals, is opaque with a waxy luster, varying in color from greenish gray to sky blue.

Elected to serve in the United States House of Representatives in 1968, Shirley Chisholm was known for advocacy the interests of the urban poor.

In the 1800s store owners sold everything from a needle to a plow, trust everyone, and never took inventory.

A musical genius, John Cage is noted for his highly unconventional ideas, and he respected for his unusual compositions and performances.