Natural history is a difficult thing to conceptualize. You’ve got eons of undocumented progress, like the evolution of many species. Take, for example, the Australopithecus, an ancient great ape ...

Long considered the longest living human relative, Lucy was dethroned of her status in 1994 following the discovery -— also in Ethiopia -— of Ardi, a female Ardipithecus ramidus who lived 4.5 ...