For octopuses, changing color burns about as many calories as a human on a 30 minute jog pound for pound, new research ...

Bands of yellow and orange aspen trees ripple across the slopes, flickering against the dark green of conifer forests. The display is dazzling, but leaves don’t change color just for decoration. The ...

For the first time ever, marine biologists have measured how much energy octopuses really need to change color — and it's a lot. When you purchase through links on our site, we may earn an affiliate ...