|
|
Did you know?
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
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.
Did you know?
The human body produces and destroys 15 million blood cells every second.
Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.