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Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

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Asthma cases in Americans are about 75% higher today than they were in 1980.

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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

An overview of the two stages of photosynthesis: light reactions and the Calvin cycle An overview of the two stages of photosynthesis: light reactions and the Calvin cycle
Absorption of light energy by an electron Absorption of light energy by an electron
Image of a flower petal. Image of a flower petal.
Conjunctivitis, with the characteristic “pinkeye” appearance. A yellow crusty exudate is also common Conjunctivitis, with the characteristic “pinkeye” appearance. A yellow crusty exudate is also common
Taken by Hinode's Solar Optical Telescope on January 12, 2007, this image of the Sun reveals th Taken by Hinode's Solar Optical Telescope on January 12, 2007, this image of the Sun reveals th
Major bone (tan) and cartilage (light blue) elements of the human skeleton. Inset shows regions of v Major bone (tan) and cartilage (light blue) elements of the human skeleton. Inset shows regions of v
Video: Acid-base imbalances - metabolic acidosis and alkalosis

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