At our current level of technology, more practical efforts focus on what is known as active camouflage. This is more akin to the way animals like squid and chameleons alter their appearance to ...

Are we on the verge of real invisibility? Active camouflage is closer than ever, and this video explains the innovations bringing it to life.

They use active camouflage (the ability to change color to match their background) to hide from larger predators and to ambush their prey. Their change of color isn’t instantaneous; it usually takes ...