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Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.
Did you know?
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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).
Did you know?
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Did you know?
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.