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The familiar sounds of your heart are made by the heart's valves as they open and close.
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.
Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.