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Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

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

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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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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

The proportion of obese and extremely obese adults in the United States has increased over the past The proportion of obese and extremely obese adults in the United States has increased over the past
A typical battery-powered 3/8 inch drive impact wrench. A typical battery-powered 3/8 inch drive impact wrench.
Touch the test light to the negative (–) terminal of the battery or a good engine ground to check ... Touch the test light to the negative (–) terminal of the battery or a good engine ground to check ...
Top Ten States Ranked by Rate or Reported Bacterial STI Cases in 2011 Top Ten States Ranked by Rate or Reported Bacterial STI Cases in 2011
Weight management is such a hot topic in the United States that it is frequently Weight management is such a hot topic in the United States that it is frequently
Gypsy moths native to Europe and Asia feed on oaks through much of the United States. Gypsy moths native to Europe and Asia feed on oaks through much of the United States.
Video: Helper T cell receptors, activation, proliferation, differentiation & action

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