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Did you know?
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
Did you know?
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
Cyanide works by making the human body unable to use oxygen.
Did you know?
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.