Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
Did you know?
On average, the stomach produces 2 L of hydrochloric acid per day.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.
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Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
Difficulties in applying the morphological species concept
The human oxygen-hemoglobin dissociation curve.
Mouse with human liver cells
Eight weeks old human embryo
Vesalius’s De Humani Corporis Fabrica was an important early work on the human species.