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Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

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Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.

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There are more nerve cells in one human brain than there are stars in the Milky Way.

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Overview of eukaryotic transcription control Overview of eukaryotic transcription control
Our species’ ability to form social bonds and be loyal and cooperative within our “tribe” may ... Our species’ ability to form social bonds and be loyal and cooperative within our “tribe” may ...
Negative feedback control of the female reproductive hormones. Negative feedback control of the female reproductive hormones.
A) Thumb press across top of shoulder. (B) Repeated pressing to GB-21 to disperse energy; massage ... A) Thumb press across top of shoulder. (B) Repeated pressing to GB-21 to disperse energy; massage ...
Video: Introduction to Human Immunodeficiency Virus (HIV)

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