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Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

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According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

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Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

The internal structures of the outer, middle, and inner ear. The internal structures of the outer, middle, and inner ear.
Internal structures at the back of the eye. Internal structures at the back of the eye.
Internal Anatomy of the Nose Internal Anatomy of the Nose
Internal Renal Anatomy Internal Renal Anatomy
In order to encourage Canadians to avoid cross border shopping, Walmart Canada is striving to ... In order to encourage Canadians to avoid cross border shopping, Walmart Canada is striving to ...
Offspring of Mendel's Dihybrid Cross Offspring of Mendel's Dihybrid Cross
Video: Bulk flow - factors that influence bulk flow

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