Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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Cyanide works by making the human body unable to use oxygen.
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About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.
The classic stages of the demographic transition.
Stages of Liver Damage
Stages of Liver Damage 2
When Union troops pushed toward Richmond in June of 1862, these slaves crossed the Rappahannock Rive
Knead the calf muscles with both hands. Place the foot flat on the table, knee bent. Reach behind ...