After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.
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Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
Kids playing with snow
African dancing mask from Ulivira, Lake Tanganyika.
Effect of Increasing the Investment Rate on the Steady State
Crater Lake, Oregon Caldera
The First-Pass Effect
Mass spectrometry of a synthetic version of collagen peptide