A huge analysis of epigenetic changes throughout the entire adult lifespan provides the most comprehensive picture to date of how ageing modifies our genes. The study reveals that some human tissues, such as the retina and stomach, accumulate more ageing-related DNA changes than do others, such as the cervix and skin, and found universal epigenetic markers of ageing across different organs.
What they're showing is extremely convincing; I would say that it's a landmark in the field, highlighting how environmental pressures induce heritable changes without affecting DNA.