« previous next »
« previous next »
 

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

world percentage of religion world percentage of religion
Distribution of the Old World monkeys. Distribution of the Old World monkeys.
Ten Leading Causes of Death in the World, 2011 Ten Leading Causes of Death in the World, 2011
The male physique depicted in popular action figures in the 1970s The male physique depicted in popular action figures in the 1970s
Singapore’s Changi Airport now holds the world’s tallest indoor waterfall Singapore’s Changi Airport now holds the world’s tallest indoor waterfall
Deserts on the world map Deserts on the world map
Video: Facilitated Diffusion - Glucose transport

For a complete list of videos, visit our video library