A new study by NASA scientists explores the risks and challenges of human reproduction in space, especially for long missions ...

On Earth human sperm tend to know where to go when it comes to fertilizing an egg in utero. But that may not be the case in ...

Add Yahoo as a preferred source to see more of our stories on Google. Mammals experience a 10% increase in lifespan when reproductive opportunities are suppressed. The study analyzed records from 120 ...

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

An experimental study from researchers in the Perelman School of Medicine at the University of Pennsylvania links a specific procedure - embryo culture - that is part of the assisted reproduction ...

TOKYO -- Sexual reproduction is essential for mammals to eliminate harmful genetic mutations that build up through cloning, a ...

Humans are gearing up to make the next journey into the relative unknown with the first manned missions to Mars, which could come as early as 2022. The long-term goal of these missions will be to ...

When mammals have offspring, both in the wild and in captivity, new life is celebrated. This is especially true for species that are struggling population-wise, as each live offspring means a greater ...