Cow gene study shows why most clones fail

It has been 20 years since Dolly the sheep was successfully cloned in Scotland, but cloning mammals remains a challenge. A new study by researchers from the U.S. and France of gene expression in developing clones now shows ...

'Spermbots' could help women trying to conceive (w/ Video)

Sperm that don't swim well rank high among the main causes of infertility. To give these cells a boost, women trying to conceive can turn to artificial insemination or other assisted reproduction techniques, but success can ...

US zoo to breed rhino siblings

In a desperate bid to preserve a critically endangered species, a US zoo is taking the controversial step of trying to mate brother and sister captive Sumatran rhinoceroses.

page 1 from 9