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Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

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In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

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Blood is approximately twice as thick as water because of the cells and other components found in it.

Modern primate study sometimes involves high-tech methods. This golden lion tamarin is having a batt Modern primate study sometimes involves high-tech methods. This golden lion tamarin is having a batt
Posterior views of H. erectus, Neandertal, and modern H. sapiens show differences in vault shape. Posterior views of H. erectus, Neandertal, and modern H. sapiens show differences in vault shape.
Compare the Final Code with the Documentation Compare the Final Code with the Documentation
Validation of the genetic code by amino acid sequence analysis of T4 phage lysozyme mutants Validation of the genetic code by amino acid sequence analysis of T4 phage lysozyme mutants
Birth of Modern Astronomy Birth of Modern Astronomy
The genetic code The genetic code
Video: Exercise and cardiac output & Definition of stroke volume

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