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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.