Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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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.
A controlled fire being set as part of ecosystem management in Jasper National Park.
Brumbies on the Chandler River, Oxley Wild Rivers National Park.