The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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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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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.
Spain’s North American Frontier, c. 1750
This 80-year old man in a village in Hubei, China, has slowed down, but he has not retired. He is ...
Invasive species and the biodiversity loss
American Government: Roots and Reform, 2009 Edition
Receptive language usually develops before expressive language
A non-interest-bearing five-year note for $54600.00 issued May 1, 2015, is discounted April 1, ...