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Vasectomy is a surgical procedure to sterilize the sperm of an individual, making him unfertile.

This works by cutting the vas deferens tubes, used to transport sperm during ejaculation.
Vasectomy was discovered in 1823, but it was not originally used for birth control.
The first vasectomy was performed by Sir Astley Cooper in England on a dog.
The first human vasectomy was performed in 1893 by Dr. Reginald Harrison, in London. Not used for birth control but to trying treating an enlarged prostate
Vasectomy was finally recognized as a mainstream, voluntary method of family planning and control birth during World War II. After the war, its popularity surged globally as a safe option for permanent sterilization