New study finds microgravity disrupts sperm and embryo development, raising concerns about human reproduction in space.

Floating in near-weightless conditions can be disorienting for even the most experienced astronauts. Male reproductive ...

"This is the first time we have been able to show that gravity is an important factor in sperm’s ability to navigate through ...

Having a baby in space may require a bit more direction, with new Adelaide University research revealing the navigational ...

A new experiment showed that humans may be able to reproduce in space, paving the way for self-sustaining colonies.

A lot happens in the first month of human embryo development as a single cell morphs into multitudes. Yet despite its significance, this period is basically a “black box” to researchers, says stem ...

In the earliest hours after fertilization, an embryo takes its first steps toward becoming a living organism by shedding maternal control and activating its own genetic program. This critical process, ...

What do the earliest stages of a pregnancy look like? Embryonic development has been extensively studied, but most of our knowledge of the earliest stages of a growing baby come from stationary ...

A team of scientists has just gotten a closer peek into one of the earliest and most fundamental steps of creating a human life. Research out today highlights how they captured—for the first ...