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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).