“Nut Case” — The Discovery Files

A study out of the University of Michigan is tracking the battle between blue spruce trees and red squirrels — a struggle that has become a survival of the wittiest. Earlier research documented the “swamp and starve” strategy of trees, in which they produce an overabundance of cones (more than the squirrels can harvest) every few years and then produce very few cones in the between years. But, in a remarkable counter strike, it seems the squirrels have figured out a clever way around the trees’ maneuver — a population boom that coincides with the seed boom!