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According to ​new research, talking about a painting while looking at it changes the way you see it. Talking actually helps you see more of it.

In a peacock's mother-of-pearl tail, precisely arranged hairline grooves reflect light of certain wavelengths. Imitating this system has been a leading approach to developing next-generation reflective displays.

I love this... I've been singing praises of nano-particles and future where printed materials shine like butterfly wings. I'll take peacock. I know displays are in--but do think there is a 'paint' element for museum exhibits to explore in future.