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Did you know?

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

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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

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Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

A nearly motionless individual, alert to danger, will whistle when alarmed to warn other groundhogs A nearly motionless individual, alert to danger, will whistle when alarmed to warn other groundhogs
The 2012 U.S. presidential campaign rang with “get tough” cries to end Iran’s nuclear capacity and c The 2012 U.S. presidential campaign rang with “get tough” cries to end Iran’s nuclear capacity and c
Infants can segment adult speech into individual words.  Infants can segment adult speech into individual words. 
Results from Kliegl's study show that older adults can learn complex information-processing Results from Kliegl's study show that older adults can learn complex information-processing
Brain metabolism in a schizophrenic individual (left) and a normal individual (right). These scans o Brain metabolism in a schizophrenic individual (left) and a normal individual (right). These scans o
A lesion called a plaque in the brain of an individual with Alzheimer disease. A ring of degeneratin A lesion called a plaque in the brain of an individual with Alzheimer disease. A ring of degeneratin
Video: Virtual Enzyme Kinetics & Lineweaver Burk Plot

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