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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
Medication errors are three times higher among children and infants than with adults.
As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.
When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.