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Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

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The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

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Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

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

Two women having a conversation using American Sign Language. Two women having a conversation using American Sign Language.
Procedures for Diagnostic Tests Related to the Musculoskeletal system Procedures for Diagnostic Tests Related to the Musculoskeletal system
Massage promotes proper growth and development of infants. Massage promotes proper growth and development of infants.
Development of the Reproductive Systems Development of the Reproductive Systems
A gene chip carrying the human gene set. This chip can be used to diagnose genetic disorders A gene chip carrying the human gene set. This chip can be used to diagnose genetic disorders
Human embryo at successive stages of development (not to scale). Human embryo at successive stages of development (not to scale).
Video: DNA Sequences - Dideoxy Sequencing

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