|
|
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.
The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.
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.
Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.
![Bacterial colonies, each derived from a single cell Bacterial colonies, each derived from a single c](https://biology-forums.com/gallery/47/medium_2137_26_04_12_3_44_08.jpeg)
![Stereo Image taken by NASA STEREO Probes launched in 2006; utilizing two Spacecrafts to image the Su](https://biology-forums.com/gallery/47/medium_12359_26_01_13_4_08_11.jpeg)