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

Ducks with corkscrew penises, fish changing sex – what do we really know about sex and reproduction on Earth? Less than we ...

A snake that previously shocked staff and students at a college in England by producing offspring without a mate is once ...

Unsettling animal behaviours, often driven by instinct and survival, are explored. From langur and lion males taking over ...

Learn how the Amazon molly, an all-female fish that reproduces asexually, uses gene conversion to maintain healthy DNA and ...

Even back then, scientists were puzzled. Many prediction models suggested this fish shouldn’t survive beyond roughly 10,000 ...

Acoustic tags reveal smalltooth sawfish using Florida’s Saint Lucie River nursery, offering rare good news for a struggling species.

The agronaut octopus is an interesting species not often seen by humans. Read here to learn more about these strange octopuses.

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

University of Missouri researchers have shown how an all-female fish species called the Amazon molly defies the long-held ...

Unlike women, who are born with most of the eggs they’ll ever have, men produce sperm continuously from puberty onward, storing it in the reproductive tract until it’s ready for release. When men need ...

As the generations dragged on past the 27th iteration, the birth rate began to silently collapse. By the 57th generation, a mere 0.6 percent of the cloned embryos survived. The 58th generation ...