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In the video, Eric walks Jasmin into a room adorned with elegant candelabra, flower petals spread across the floor, bouquets of roses and a large red heart framed on a wall.

The diplomatic red carpet will be rolled out for a state visit by the Emir of Qatar, with the King and the Prince and Princess of Wales delivering a royal welcome on Tuesday morning.

In particular, they let in light within the blue and red ranges -- the optimal wavelengths for photosynthesis -- but appear to block ultraviolet radiation from penetrating into their shells where it might otherwise damage their DNA.

According to the researchers, these risk reductions are likely driven by the replacement of red and processed meats with plant proteins.

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