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Roughly two-thirds of people have had déjà vu, or the weird feeling that a new situation has been experienced before. Yet its prevalence belies just how mysterious the phenomenon remains to researchers, despite some extraordinary recent leaps in neuroscience. In part, this is because it’s extremely difficult to instigate déjà vu in the lab. But as this brief animation from BBC Ideas shows, scientists do have some hypotheses for what brings déjà vu to the surface of consciousness – from the idea that it might be a built-in processing glitch in the brain, or an indication of healthy memory, to the slightly more puzzling notion that it’s part of quantum entanglement.
An animator wonders: can you ever depict someone without making them a caricature?
Film and visual culture
With human help, AIs are generating a new aesthetics. The results are trippy
Gender and identity
The joys and complications of raising a baby without gender in a binary world
Human rights and justice
The staggering cruelty of Ireland’s Church-run ‘mother and baby homes’
Why a journeyman boxer finds contentment in the art of losing
Mood and emotion
‘Let me dream you into my reality’: memories illuminate an unthinkable isolation
Wesley wants to solve the rooftop mystery – but does he have what it takes?
Love and friendship
Skiing blind is a challenge – but it helps to have a loved one to guide you
A massive art installation attempts to put the COVID-19 deaths in perspective