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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

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Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

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The longest a person has survived after a heart transplant is 24 years.

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To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

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Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

The open ocean is the most extensive biome on earth. The open ocean is the most extensive biome on earth.
Lightning on Earth Lightning on Earth
The Mass of Impacts on Earth The Mass of Impacts on Earth
Planets, Earth and Moon Planets, Earth and Moon
Obliquity "Tilt of Earth on its axis" Obliquity "Tilt of Earth on its axis"
In another solar system, a planet has an airless moon Zygo that is 4.0 × 105 m in diameter. ... In another solar system, a planet has an airless moon Zygo that is 4.0 × 105 m in diameter. ...
Video: The 4 steps of translation Animation

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