Scientists warn that radiation and microgravity pose a major threat to human reproduction in space. Understanding these ...

A new international study warns that reproductive health in space is no longer a theoretical concern and that questions about ...

Human biology evolved for a world of movement, nature, and short bursts of stress—not the constant pressure of modern life. Industrial environments overstimulate our stress systems and erode both ...

Scientists have created human eggs containing genes from adult skin cells, a step that someday could help women who are infertile or gay couples have babies with their own genes but would also raise ...