Scientists at Chromaviso in Denmark are artificially recreating the changing patterns of natural light, from the blue glow of a morning sunrise, to the bright intensity of midday sun, and finally ending with a warm evening hue. 

These changes in light throughout the day support our circadian rhythm, which affects every cell in our body.

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Emma Keeling catches up with the team to find out how their technology has been applied in care homes, where it's having a dramatic impact on the residents' wellbeing and mental health. She also finds out how the technology has been faring at Copenhagen's hospitals. 

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