Rainbow eucalyptus (Eucalyptus deglupta) has been called one of the most colorful trees in the world, with cinnamon bark that peels away to reveal a spectrum of green, blue, orange, gray, red, and ...

At first glance, you might just think someone got a little carried away and painted those tree barks. Reasonable guess, but what if I told you that those colorful streaks formed naturally? And that ...