Here's a countdown of 10 common skin conditions, some benign and others life-threatening.
People with generalized anxiety disorder experience constant feelings of anxiety that affect their everyday life.
Reference Nearly every region of the world has influenced the customs and traditions of the United States.
Reference Al Gore didn't invent the Internet. Vinton Cerf & Bob Kahn are often called Fathers of the Internet.
Reference "The birds and the bees" is a story parents tell their children to deflect the question "Where do babies come from?" The phrase refers to the talk about sex.
The Pleistocene epoch lasted from about 2.6 million to 11,700 years ago and included the last ice age, when glaciers and giant megafauna dominated the landscape.
Reference India is one of the world's oldest and most diverse cultures. Here is an overview of Indian customs and traditions.
Reference Mexican culture varies widely throughout the country, but traditions are highly valued as is its long and storied history.
Reference The lymphatic system helps rid the body of toxins. Diseases of this system include lymphadenopathy, lymphoma and other disorders.
Reference Discover the world of French culture, the customs and traditions of France, as well as how it became a center of fashion, art and architecture.
REFERENCE Italian culture goes back to the ancient, had a massive impact on the Renaissance and is represented in the world today by its art, fashion and popular food.
The respiratory system is responsible for taking in oxygen and expelling carbon dioxide. The main organs are the lungs, which work in concert with the cardiovascular system.
The heart, lungs and about 60,000 miles of blood vessels work together to keep blood pumping through our bodies.
Sometimes, at sunset, the sun appears to suddenly and briefly change color. Blink, and you'll miss it.
This may be the most important system in the body. Without the ability to reproduce, a species dies.
The urinary system — also known as the renal system — produces, stores and eliminates urine, the fluid waste excreted by the kidneys
Chinese culture reflects the customs and traditions of one of the largest countries in the world, with 1.34 billion people.