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There are more sensory neurons in the tongue than in any other part of the body.
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.
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.
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%).