An curved arrow pointing right. Two Ice Age cave lion cubs were found frozen in permafrost this past summer. Now researchers are attempting to clone them. Produced by Matt Stuart. Video courtesy AP.

Looking for blind cavefish in San Luis Potosí, biologist Luis Espinasa and his team accidentally found the remains of giant ...

The fact that the last Ice Age resulted in rising sea levels was ... Next up, read about the extinct cave lion species ...

Robin Bicknell, Director The Nature of Things documentary, Ice Bridge tells the story of ... Sloth), the Panthera leo atrox (American Cave Lion) and the Pinguinus impennis (Great Auk).