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 ...

Saving an endangered breed of donkey

Nothing I've read about the Baudet du Poitou donkeys prepares me for my first sight of them. They are girthy, with massive round bellies and oversized ears that swoop forward and back, sometimes independently of one another. ...

'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.

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