The gel, which men rub on their upper bodies daily, delivers synthetic progestin to block the testes from producing normal levels of sperm.

Sperm-binding, peptide–coated beads work as an implantable contraception device in mice and as a means of selecting human sperm for assisted reproduction techniques, researchers show. 

Carl Djerassi, who synthesized a hormone that was key to the creation of the birth control pill, has passed away at age 91.

Did 20th-century pharmaceutical and technological advances shape modern sexual behaviors?

In a proof-of-principle study, genetic deletion of two genes renders male mice infertile by preventing sperm transport through the vas deferens.

A new study suggests a possible link between the use of oral contraceptives and rising prostate cancer rates.