Ancient Human Migration and Memory Decline

Lapses in memory are a normal part of ageing but can also be signs of dementia. Here’s how to distinguish between typical brain ageing and cognitive decline

The out-of-Africa migration, in which ancient humans went on to inhabit every other continent except Antarctica, may not have been one moment in time, but a long and slow process. Columnist Michael Marshall examines how archaeologists are rethinking this critical part of our history