The half-century-long quest to develop a male birth control pill has just received a boost from an unexpected corner: a Boston laboratory working to craft potent anticancer drugs.
Scientists found that by injecting mice with a compound originally used in cancer research, they could interfere with normal sperm development, rendering male mice infertile. But, importantly, when the mice were taken off the regimen, they could sire normal offspring.

Comments
"With a slew of new efforts launched to interrupt the normal course of sperm development, or block their ability to fertilize the egg -- driven by incidental findings from scientists studying cancer or neurobiology and by the revival of drugs designed for other reasons -- scientists said a number of solid leads exist that could finally provide new options and shift more responsibility for family planning to men." COMMENT 0N ABOVE; What??
Wait till the Catholic Church hears about it. Another threat to increasing the congregation.
Will the drug be called "Pullout"?