There are 60,000 miles of blood vessels in every adult human.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).
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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
20,000 year old spotted hyena painting from the Chauvet Cave, France
Checklist of Developmental Skills: Birth to 5 years Cont.
Adolescence: 12 years or puberty to the beginning of adulthood.
Women who reported one, two, or three or more major life events in the past 5 years were ...
Links to the World Economy
World Regions in Global Context: Peoples, Places, and Environments