From an evolutionary standpoint, it’s ruthlessly efficient. The queen collects sperm from multiple drones in one flight, stores it for years, and then spends her life laying up to 2,000 eggs a day.

This year, he's willing to take on similar damage to get the job done. "Maybe I’ll cut it in half, but I ain’t cutting the whole thing off," Vrabel said. Vrabel, 50, already has two sons, Tyler and ...

When hormonal contraceptive pills hit the market in the 1960s, it revolutionized women’s control over their own bodies. For men, successful reproduction begins with the right cocktail of hormones, ...