How Blue Cheese Is Made and Why Is It Blue?
How Blue Cheese Is Made and Why Is It Blue? Blue cheeses are all made from cow’s milk except from the famous French Roquefort cheese, which comes from ewes’ milk. The...
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Where Is the Aorta?
Where Is the Aorta? The aorta is the great artery rising from the left side of the heart, through which the blood passes on its way to all parts of the body except the...
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How Does the Heart Work?
How Does the Heart Work? The heart, which is a muscular pump, beats about 72 times a minute through a continuous and automatic process of muscular contraction and...
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Why Is Blood Red?
Why Is Blood Red? Blood gets its red color from a substance called “hemoglobin.” Hemoglobin has a molecule called a “heme” which has the metal...
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What Did Tartars Lived on?
What Did Tartars Lived on? Over seven hundred years ago, a wandering Asian people called the tartars could go for more than ten days without gathering food or using any...
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