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Did you know?
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
Did you know?
Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.
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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
![History of the number of observed sunspots during the last 250 years, which shows the ~11-year solar](https://biology-forums.com/gallery/47/medium_12359_16_06_12_7_11_02.png)
![Cranial capacity has increased approximately fourfold over the last 3.5 million years of hominin evo](https://biology-forums.com/gallery/47/medium_273688_23_02_15_7_07_16_2083771.jpeg)