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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.

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People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

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Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

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Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

The skullcap from Trinil, Java is the type specimen for H. erectus and is about 900,000 years old. The skullcap from Trinil, Java is the type specimen for H. erectus and is about 900,000 years old.
Kitagawa Utamaro, The Fickle Type, from the series Ten Physiognomies of Women. Kitagawa Utamaro, The Fickle Type, from the series Ten Physiognomies of Women.
Men experience more trauma in their lifetimes, but women are more likely to develop PTSD. Men experience more trauma in their lifetimes, but women are more likely to develop PTSD.
As immigrants assimilate into a new culture, they learn and adapt new customs. This photo was taken ... As immigrants assimilate into a new culture, they learn and adapt new customs. This photo was taken ...
Educational Achievement in the United States Educational Achievement in the United States
Chylomicron Chylomicrons are one type of lipoprotein Chylomicron Chylomicrons are one type of lipoprotein
Video: Nucleic acid digestion -small intestine

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