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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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The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

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About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

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Human kidneys will clean about 1 million gallons of blood in an average lifetime.

The four ways in which animals exchange heat with the environment are radiation, evaporation, convec The four ways in which animals exchange heat with the environment are radiation, evaporation, convec
As a result of sharing its environment with humans, this macaque had the opportunity to steal an ast As a result of sharing its environment with humans, this macaque had the opportunity to steal an ast
Effect of the chemical environment on pKa Effect of the chemical environment on pKa
Environment of tRNAs at the ribosome as determined by cross-linking Environment of tRNAs at the ribosome as determined by cross-linking
Economic activity as viewed by environment and ecological economists Economic activity as viewed by environment and ecological economists
Essential Environment Essential Environment
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