Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.
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There are approximately 3 million unintended pregnancies in the United States each year.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
HUMAN BRAIN
Segregation according to resource factor among 40 species of British passerine birds.
Time Line of Human History From Upper Paleolithic Period to the Present