A new species of dinosaur has been discovered, known as Ledumahadi mafube, the largest animal that walked the Earth during its lifetime. Ledumahadi mafube, which means "a giant thunderclap at dawn," in the South African language Sesotho, walked in an unusual way. It did not walk on straight limbs, but rather with a "crouched" stance, causing scientists to believe L. mafube was an "evolutionary 'experiment'." "The first thing that struck me about this animal is the incredible robustness of the limb bones," said lead author Dr. Blair McPhee in a statement. "It was of similar size to the gigantic sauropod dinosaurs,...