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Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

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According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

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The familiar sounds of your heart are made by the heart's valves as they open and close.

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Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Location of major biodiversity hot spots around the world. Location of major biodiversity hot spots around the world.
Multiple crossovers can include more than two chromatids Multiple crossovers can include more than two chromatids
Major moons of Uranus in order of increasing distance (left to right), at their proper relative size Major moons of Uranus in order of increasing distance (left to right), at their proper relative size
Major Impacts on Mercury and on Our Moon Major Impacts on Mercury and on Our Moon
Basic Food Groups and Their Major Nutrients (Continued) Basic Food Groups and Their Major Nutrients (Continued)
Major Types of Hydrogen Bonds Found in Biomolecular Interactions Major Types of Hydrogen Bonds Found in Biomolecular Interactions
Video: Factors that increase metabolic rate and heat production

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