Contraceptives

The pill appears in the 60s and it was the first contraceptive.

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%