Genetic mutations

Men have long assumed they can father children indefinitely without consequence. A major study just revealed why that assumption might be dangerous. Women receive relentless reminders about their biological clocks. Fertility declines after 35. Egg quality deteriorates. Pregnancy risks multiply. Society hammers home the message that female reproduction operates on a strict timeline. Men, meanwhile, …

Science has a long history of being confidently wrong. For most of the 20th century, the medical establishment held a view of autism that was not just incorrect but actively harmful to the families it affected. Overturning that view took decades of careful research, two landmark studies, and a gradual shift in how geneticists understood …