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Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

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Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

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The average office desk has 400 times more bacteria on it than a toilet.

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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

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The human body produces and destroys 15 million blood cells every second.

Smallest Hamster in the World Smallest Hamster in the World
Movement of Water in the World Ocean Movement of Water in the World Ocean
Young children typically are boundlessly curious about the world around them. Young children typically are boundlessly curious about the world around them.
Parents around the world teach their children their religious beliefs and practices. This photo is ... Parents around the world teach their children their religious beliefs and practices. This photo is ...
Is there anything in life that is permanent, or is the world constantly changing? Is there anything in life that is permanent, or is the world constantly changing?
World Crude Oil Production, 1900–2010 World Crude Oil Production, 1900–2010
Video: Cardiac Cycle (Part 3 of 4)

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