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Did you know?

The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

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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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Illicit drug use costs the United States approximately $181 billion every year.

Large-scale impacts of the (a) positive, and (b) negative phases of the North Atlantic Oscillation. Large-scale impacts of the (a) positive, and (b) negative phases of the North Atlantic Oscillation.
A Withdrawal Reflex A Withdrawal Reflex
Meditation Reduces Negative Emotions Meditation Reduces Negative Emotions
Reinforcement and Punishment Reinforcement and Punishment
Touch the test light to the negative (–) terminal of the battery or a good engine ground to check ... Touch the test light to the negative (–) terminal of the battery or a good engine ground to check ...
Negative and positive feedback loops Negative and positive feedback loops
Video: Kidney Stones

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