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There are approximately 3 million unintended pregnancies in the United States each year.
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
There are more nerve cells in one human brain than there are stars in the Milky Way.
A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.
Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.
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