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As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.
Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.
Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
There are more nerve cells in one human brain than there are stars in the Milky Way.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.