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

Sperm struggles to find its way to an egg in microgravity, suggesting mammalian reproduction in space may not be possible.

MEXICO CITY — When she walked into an IVF clinic in June, Alin Quintana knew it would be the last time she would try to conceive a child. She had prepared herself spiritually and mentally for the ...

Colonizing space or another planet is most likely a fool's errand and a giant waste of money that should instead go toward making Earth a better place to live, if we're ever going do it successfully, ...