Algeria had, until recent days, scarcely featured on the mental maps of most British politicians.

BBC: What is the UK doing in North Africa?

Some shark species make "mental maps" of their home ranges, allowing them to pin-point destinations up to 50km (30 miles) away, research suggests.

BBC: Sharks navigate using 'mental maps'

"If we have mental maps for 2, 000 people, we get a sense of what 'normal' looks like, and then we can use that to spot what isn't normal, " says Marcus.

FORBES: Inventing The Future

Looking at 90 brain regions, the researchers created maps of brain activity during each of the four mental states.

FORBES: Scientists At Stanford Come Up With 'Mind-Reading' Imaging Technique