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The human body produces and destroys 15 million blood cells every second.
Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.
Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.
Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.
Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
![This lithograph of the New York draft riots, 1863, shows that although the rioters mainly targeted b](https://biology-forums.com/gallery/47/medium_376021_22_08_15_1_40_22_22354943.jpeg)
![Auguste Comte (1798–1857), who is credited as the founder of sociology, began to analyze the bases ...](https://biology-forums.com/gallery/47/medium_599494_07_11_16_11_58_21_24077416.png)