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

Scientists have found that sperm in space can’t find their direction during their pursuit to fertilize an egg.

WASHINGTON - As humankind moves toward the goal of establishing a long-term presence on the moon and Mars, the question of ...

The scientists also looked at the effects of exposure to microgravity had on embryo development in the animal models, and the ...

Seasonal shifts in behavior — not temperature — may subtly influence sperm motility. Whether this variation in sperm quality ...

Blue sperm whales have only become as large as they are in response to long-term exposure to environmental factors - long-term, but really quite short-term compared to how long their kind, including ...

Scientists warn that storage may cause sperm to lose quality over time, raising new concerns about fertility and conception ...