I love love love photo series like this one, in which five men photographed themselves for thirty years. It’s time-lapse photography on an epic scale, showing just how fast we age and die. WHen my daughter was born, we used to photograph her in the same place every week but unfortunately fell out of practice.

Such projects are not just artistic: I believe they have enormous scientific potential for learning how people grow and age. Given the explosion of digital photography, it’s only a matter of time before someone mines the massive public data set for scientific insight. That is, if they’re not already doing it.