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

There is a limit on how many times a mammal can be cloned before suffering "mutational meltdown," Japanese scientists have ...

After the 25th cloning, harmful genetic mutations built up over the subsequent generations. Read more at straitstimes.com.

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 ...

(Peter Finch/Stone/Getty Images) Scientists have pushed the limits of mammal cloning until the whole house of cards has come ...

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

Current World Health Organization (WHO) guidelines typically recommend two to seven days of abstinence before taking semen ...

In the competitive romance game, mature humpback whales are getting the females more often than their younger rivals because they know how to sing great love songs to them.

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

Countless scientists and at least a dozen high-concept sci-fi comedies over the past 30 years have speculated on the ...

Kristofer M. Helgen is affiliated with the Bernice Pauahi Bishop Museum, Honolulu, Hawaii. Erik Meijaard and Tim Flannery do not work for, consult, own shares in or receive funding from any company or ...

Purdue researchers created a contraceptive vaccine that sharply cuts fertility to help manage wildlife overpopulation ...