One of the most fascinating periods in the evolution of the human lineage is the appearance of the first ancestors capable of bipedalism. Knowing the type of locomotion used by many fossil ...

As the African landscape shifted gradually from dense forests toward large patches of savannah, early hominids found their food supplies waning, leading them to descend from the trees and become ...

Mexico's Jesus lizard got its name from an unusual ability to run over water on its hind legs, its body semi-erect and its front limbs dangling in the air. The spiny-tailed iguana and bearded dragon, ...