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Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

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There are approximately 3 million unintended pregnancies in the United States each year.

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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

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The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Part of the Hubble Ultra-Deep Field image showing a typical section of space containing galaxies int Part of the Hubble Ultra-Deep Field image showing a typical section of space containing galaxies int
A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan
Humans have 23 pairs of chromosomes, containing 3 billion “letters” in the DNA code and about ... Humans have 23 pairs of chromosomes, containing 3 billion “letters” in the DNA code and about ...
The DNA from one chromosome has a mass of ~20 billion Daltons The DNA from one chromosome has a mass of ~20 billion Daltons
Cost of Going to School Cost of Going to School
Cost = $99.49; Rate of markup based on cost = 32%. Find the markup and selling price. Cost = $99.49; Rate of markup based on cost = 32%. Find the markup and selling price.
Video: Cardiac conductile cells

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