Facial recognition of grizzly bears?
It’s a problem that has been vexing bear biologists for decades. How on earth do you tell two grizzly bears apart? They almost all have that characteristic dish-shaped nose, a hump on the back of their neck that packs a mighty digging muscle, and long curving claws that can be up to six inches long.
As someone who has spent much of the last 15 years deep…