The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
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More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.
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Your heart beats over 36 million times a year.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
Genetic variation in the color of corn kernels
True-color view of Mars seen through NASA's Hubble Space Telescope in 1999