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Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
Cyanide works by making the human body unable to use oxygen.
Did you know?
Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.