Sperm may lose their ability to navigate in microgravity, raising new questions about whether human reproduction is possible in space.

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

A new study suggests humans face barriers to reproducing in space, with microgravity disrupting sperm movement.

As commercial spaceflight draws ever closer and time spent in space continues to extend, the question of reproductive health beyond the bounds of planet Earth is no longer theoretical but now ...

In a common metaphor used to describe human fertilization, sperm cells are competitors racing to penetrate a passive egg. But as critics have noted, the description is also a 'fairy tale,' rooted in ...

Who hasn't seen it before: the view through the microscope in which a sperm penetrates an egg cell and fertilizes it. This fundamental step in procreation happens dynamically and seemingly without ...

The DNA of human embryos has been altered and studied for the first time in the UK, offering new insight into the early stages of human development. The DNA of human embryos has been altered and ...

Roughly 50 years ago, scientists pursued a line of inquiry about the creation and development of human embryos in the lab. As of now, the extent of this research is limited to the first 14 days ...