Human aging is not what natural selection failed to prevent. It is what happens when selection simply has nothing left to act ...

“Estrogen is basically turning up the sensor for acetate,” Ingraham explains. “It’s a compound gut bacteria produce when they ...

And the places we have called home in more welcoming parts of the world have helped shape our species — from our genes to our ...

Utah startup says it grew human sperm in lab, creating embryos in early test of infertility breakthrough.

Paterna Biosciences says it has determined the set of instructions needed to turn sperm-making stem cells into "normal, ...

Each month during a woman's menstrual cycle, an ovary prepares 10–20 antral follicles, fluid-filled sacs that hold immature ...