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As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.
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It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.
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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.
Walrus tusk engraving made by Chukchi artisans depicting polar bears attacking walruses. On display
California ground squirrel (Spermophilus beecheyi) in the man-made rocky shoreline of the Berkeley M
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Early cities were small economic centers surrounded by walls to keep out enemies. These cities had ...
How many grams of CO2 can be made from reacting 78.1 g of O2 and 62.4 g of C4H10?2 C4H10 + 13 ...
A solution is made by adding 0.100 mole of ethyl ether to 0.401 mole of ethyl alcohol. If the ...