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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.