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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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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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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There are 60,000 miles of blood vessels in every adult human.
American red squirrel
The 2012 U.S. presidential campaign rang with “get tough” cries to end Iran’s nuclear capacity and c
The Canadian ballot is considerably simpler than the American ballot. Note there is nothing like a c
American soldiers advance past a burning oil well. As the routed Iraqi army fled Kuwait, it ignited ...
The Kinsey Report on American Women
Loss of brain cells in a transgenic Huntington-disease mouse. (a) Section of normal mouse-brain stri