Color-changing animals, such as chameleons and squid, typically alter their hues when nerve signals or hormones spur pigment cells in their skin to expand or shrink. The Panamanian golden tortoise ...

Beetles display a wide range of colors, from deep muted tones to those that shift from green to purple or yellow as they ...

3D printing has become mainstream. For a few hundred euros you can buy a 3D printer online. But what about 4D printing? How do you print an object that can change over time, for example by reacting to ...

Let’s imagine that we are studying a species of beetle. The beetles come in many different colors, and we want to know how common the orange (O) coloring is in this population. This population of ...