A molecular switch that “supercharges” sperm could inspire new safe methods of contraception—including a non-hormonal male birth control pill—and improved infertility treatments. This is the discovery of scientists from Michigan State University, Memorial Sloan Kettering Cancer Center and the Van Andel Institute, who have uncovered a rapid mechanism that helps sperm to successfully reach and fertilize an egg. “Before sperm are ejaculated they sit around and wait in a sleep-like state. Once they