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Did you know?
The human body produces and destroys 15 million blood cells every second.
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Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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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.
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Thyroid conditions may make getting pregnant impossible.
![A guinea pig being examined by a veterinary medical officer for general health and pulmonary conditi](https://biology-forums.com/gallery/47/medium_27581_22_04_12_5_08_27.jpeg)
![Cerebral aneurysm. A cerebral aneurysm is the abnormal dilation of arteries supplying the brain, whi](https://biology-forums.com/gallery/47/medium_14755_14_10_12_6_48_57_9406640.jpeg)