|
|
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.
In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.