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After years of exploring the function of dreams, sleep scientist Mark Blagrove suspects human connection may be at the heart of our brain's unconscious storytelling. "Humans may have evolved to have dreams that have lots of characters in them, lots of emotions in them, that are worth telling to other people," he tells Kim Hill.
Internationally, there's a growing body of research showing sleep is often shaped by a person's social and economic circumstances, write Mary Breheny and Rosie Gibson.