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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.
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Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.
Purpura, hemorrhaging into the skin due to fragile blood vessels.
Blood Vessels
The formed elements of blood.
Mount Pinatubo caused ~1˚C cooling for up to 5 years
Blood Transfusion
The gradient of the B allele of the ABO blood groups from East to West is due to waves of migration