Tree swallows' iridescent feathers change from blue-green to muted yellow when exposed to humidity. The plumage reverses to previous color tones as humidity decreases. This discovery by Chad Eliason, ...

When you look at a painting in a museum, the colors that you see are likely less bright than they were originally, something that had previously been attributed mainly to light exposure. Now, ...

Engineers at the University of California San Diego have developed an optical device that reveals hidden images and changes colors in response to different levels of humidity. The technology, ...

New research published in the journal Advanced Optical Materials highlights an innovative technology that signals for windows to change colors depending on the amount of moisture in the air outside.