There are 60,000 miles of blood vessels in every adult human.
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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
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There are more sensory neurons in the tongue than in any other part of the body.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
Nature (Waterfall)
These monolithic figures from Easter Island suggest the contemplative nature of philosophy, which ca
Average Annual Growth Rates of Population by Country Group
The Nature and Properties of Soils, 15th Edition Cover
The price of rice in a small country is currently $6 per pound. In order to help low-income ...