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There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.
Asthma cases in Americans are about 75% higher today than they were in 1980.
The familiar sounds of your heart are made by the heart's valves as they open and close.