The ape-like human ancestor Australopithecus—perhaps best known from the iconic fossil ‘Lucy’—might not have had much meat on its menu. After examining more than 3.3-million-year-old ...

Fish don’t exist. In her novel “Why Fish Don’t Exist,” Lulu Miller points out that a true “fish” clade containing an ancestor and all its descendants is an unrealizable dream, awkwardly grouping ...