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Author Question: Eliza is talking on her cell phone while completing her homework and watching television. Eliza is ... (Read 146 times) |
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
There are more nerve cells in one human brain than there are stars in the Milky Way.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.
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).