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Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

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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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Blood is approximately twice as thick as water because of the cells and other components found in it.

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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

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Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

Post–Main-Sequence Evolution Post–Main-Sequence Evolution
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Video: Simple Diffusion - Ion transport

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