We should think twice about amnesia drugs

Linda Blair: Many people who have suffered from post-traumatic stress disorder seek psychological help. In North America, scientists are going further, looking for ways to alter memories neurochemically.

Low position on social status ladder linked to faster ageing

Scientists have uncovered evidence of a new class divide: the lower our social standing, the faster we age. The claim follows the discovery of accelerated ageing among working class volunteers, leaving them biologically older than those higher up the social ladder.