A reader points to a recent Wired article on the latest efforts in birth control for men:
The procedure is known by the clunky acronym RISUG (for reversible inhibition of sperm under guidance), but it is in fact quite elegant: The substance that Das injected was a nontoxic polymer that forms a coating on the inside of the vas. As sperm flow past, they are chemically incapacitated, rendering them unable to fertilize an egg. If the research pans out, RISUG would represent the biggest advance in male birth control since a clever Polish entrepreneur dipped a phallic mold into liquid rubber and invented the modern condom.
The Dish 