In June I wrote about the amazing longevity of naked mole rats. These rodents can live for thirty years, whereas their mice cousins can only live two years. One secret to their longevity may be the fact that they’ve never been documented with cancer. As I wrote back in June,  scientists at the University of Rochester found  a gooey protein in the tissues of the rodents that prevents cells from multiplying out of control.

But naked mole rats do more than just fight cancer. In addition to avoiding tumors, they also resist the overall decline seen in other aging mammals. A new study from the same Rochester team may reveal how they ward off aging: they’re very careful about