An old eland bull. Knee clicking can establish mating rights among antelopes. A study of eland antelopes, published in the open access journal BMC Biology, has uncovered the dominance displays used by males to settle disputes over access to fertile females, without resorting to genuine violence.

As the saying goes- blondes have more fun, but in the world of insects it may actually be the rare 'redheads' that have the last laugh….at least in terms of evolution.

A team led by a Montana State University professor has found a fungus that produces a new type of diesel fuel, which they say holds great promise.