This science challenge shows a surprising color-changing reaction using bleach and simple materials. The quick experiment highlights how chemical reactions can create dramatic visual results. A short, ...

Almost everyone has experienced it. You slice an apple for a snack, leave it on the kitchen counter, and return a short while later to find that the bright white flesh has turned an unattractive shade ...

Toyota has filed a patent application for color-changing paint, a technology that could let owners or dealerships quickly change the colors of cars. As Toyota notes in the application—which was ...

Colour change in animals can occur over different timescales and aids communication and camouflage. Direct evidence of the associated energetic costs has been lacking, but now an experimental study of ...