Male reproductive cells, sperm, might struggle to reach and fertilize female reproductive cells, eggs, in microgravity, according to a new study. Sperm and Embryo Biology Laboratory, Adelaide ...

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, ...

A newborn baby cannot walk, feed itself or even lift its head. Compared with most animals, human babies are remarkably helpless. Yet this dependence is not a weakness; it is an evolutionary advantage.