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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

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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.

Major structures of the human brain. Major structures of the human brain.
Human infants are like all other placental mammals, except they are born at a less developed state. Human infants are like all other placental mammals, except they are born at a less developed state.
Modern Human Fossil Sites in the Old World Modern Human Fossil Sites in the Old World
Three phylogenetic representations of modern human origins. Three phylogenetic representations of modern human origins.
Four kinds of evidence supporting the theory that species evolve. Four kinds of evidence supporting the theory that species evolve.
Species Diversity "تنوع الكائنات الحية" Species Diversity "تنوع الكائنات الحية"
Video: Introduction to Heart Attacks

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