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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.