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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
Cyanide works by making the human body unable to use oxygen.
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.