epigenetic clocks

When on a diet, especially one that requires 25% fewer calories, time seems to go so slowly between meals. Does that perception of time result in a slowing of our aging? A new study considers the relationship between calorie reduction and the clocks that measure our biological, rather than chronological, aging.
How old is your dog, in dog years? The widely used rule of thumb – human years x 7 – is apparently incorrect. The science behind the new formula tells us something about extrapolation and a lot about how both we, and our canine friends, age. And the Hanks-dog graph is kinda cool, too.