Resumen de How old are you really?
Age is a peculiar concept. People tend to think of it as the number of birthdays they have celebrated--their chronological age. But this is just one indicator of the passage of time. They also have a biological age, a measure of how quickly the cells in their body are deteriorating compared with the general population. And these two figures don't always match up. Here, Thomson explores what people's real age reveals about the time they've got left
