In an era of viral clips and rapid-fire social media debates, a recent exchange at the US Senate has sparked a massive global conversation. Dr Nisha Verma, an OB-GYN, found herself in the headlines ...

Male Fertility and Age: Women cannot become mothers after menopause, which often occurs around the age of 50. Men can become fathers even at older ages, but sperm quality deteriorates with age.

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. Men have nipples, mammary glands and the hormones required, ...