SpaceBorn United wants to conduct an IVF experiment in Earth’s orbit to pave the way for long-term space missions. Egbert Edelbroek was acting as a sperm donor when he first wondered whether it’s ...

Fast-forward to several decades or a half-century from now, and it’s not inconceivable that humans could be living on Mars—building habitats, trundling around in rovers, mining the subsurface for ...

Cutting off reproduction — from birth control to castration — consistently adds years to life across species, even humans.