The contraceptive pill was only supered by the abstinence or a surgical operation.
The American biologist Gregory Goodwin Pincus (1903-1967) is considered the father of the contraceptive pill.
In 1953 he and Chang Min Chueh used rabbits as guinea pigs to prove a contraceptive made with hormones.
But today there isn't any a contraceptive that always works, here are the percentages of mistake:
-contraceptives pills: 1%-3%
-male condom: 12%
-female condom: 15%-21%
-vasectomy: less than the 1%
-Feminine sterilization: 0.04%
This is a very interesting and important invention. You should have written more about it!
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