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Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

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Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

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In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

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There are more bacteria in your mouth than there are people in the world.

Graphical Multipolar Neuron Graphical Multipolar Neuron
Responses of a mirror neuron of a monkey. Responses of a mirror neuron of a monkey.
How to evaluate limits using algebra and the limit laws (Part 2) How to evaluate limits using algebra and the limit laws (Part 2)
How to add, subtract, multiply, and divide using the rules of significant digits (Part 1) How to add, subtract, multiply, and divide using the rules of significant digits (Part 1)
How to find the unknown angle of a triangle using the sine law (Part 2) How to find the unknown angle of a triangle using the sine law (Part 2)
Micrograph and graphic of a motor neuron Micrograph and graphic of a motor neuron
Video: The Lagging Strand in DNA Replication and Replication in Action

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