However, it doesn't show up for everyone. If you've updated to iOS 18.3 and are wondering how to get Siri's new glow, here's what you can do. Apple Intelligence will also run on Macs and iPads ...

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Biofluorescent creatures generate their glow with structures that absorb high-energy wavelengths of light, such as UV, violet or blue, then emit the light in a lower-energy wavelength. Researchers ...