The blood vessels nourish both the dermis and the epidermis.

Many hearing-impaired people depend on electronic hearing aids to amplify the sound waves.

Among primates, only humans have an almost naked skin that comes in different colors.

Airplanes provide the world's fastest and practical mean of transporting passengers and freight.

Monroe finally decided to follow Adam's advice and proclaimed the Monroe Doctrine.

By studying myths, we can try to understand why people behave as they do.

The president may only adjourn Congress if the two houses cannot agree on an adjournment date.

Another government spending crisis is looming in the United States.

In the 1970's, OPEC raised oil prices so drastically that its members were able to increase their national income while restricting oil production.

The nation could be completely uncontrolled in its dealings with other nations while its own citizens are made into slaves.