Mutualism

I watched a video series a couple of months ago called Incredible Creatures that Defy Evolution. Truly astonishing examples of creatures which defy evolutionary explanation . . . either on their own--in the manner their bodies are constructed (the woodpecker whose tongue goes over its skull before re-entering the mouth), or in combination with symbiotic companions (the mussel that requires a certain species of fish to incubate its eggs).

Well, I just bumped into a recent story about another symbiotic relationship that "just" doesn't seem to speak well for evolution as the source of all varieties of life on earth. Check out Ants and Trees Rub Each Others' Backs by Randolph E. Schmid.