How Your Sperm Gets Moving

Hot today: sperm! Science has discovered the molecule that tells sperm to stop sitting around and start sperming. “Now that we know what this channel is, then it could lead us to either develop a novel contraceptive for men, or perhaps find a way to improve the sperm motility for men whose sperm don’t swim as well as they should,” says the University of Sheffield’s Dr. Allan Pacey. (Other contraceptives for men: oral sex, and, possibly, smoking pot.) For more information on sperm, consult this handy chart. Or call me.