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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.
The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.
The familiar sounds of your heart are made by the heart's valves as they open and close.