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 ...

Add Yahoo as a preferred source to see more of our stories on Google. As an evolutionary biologist whose career has focused on how embryos develop in a wide variety of species over the course of ...

Moira Gleason is a Daily Signal journalism intern. When Donald Trump signed an executive order aimed at lowering costs for and reducing barriers to in vitro fertilization last month, that renewed the ...

Researchers constructed a labyrinth at Adelaide University. It's not big; rather, it's made to fit under a microscope, with ...

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 ...