Naked Molerat: Nature's Weirdest Superhero

Looks aren't everything. Despite its appearance, the Naked Molerat should be envied. It lives to a very old age, never gets sick, and is practically impervious to pain. Scientists want to know why. In the quest to combat age-related illness - and even ageing itself - researchers around the world are searching for the Methuselah gene in this remarkable rodent to find cures for humans. (National Geographic)