LifeOrcas may be to blame for some mass dolphin strandings Two mass strandings involving hundreds of dolphins in Argentina probably happened because the pods were being hunted by orcas, highlighting the role of predators in these mysterious events News
HumansThe first apes to walk upright may have evolved in Europe A single femur found in Bulgaria appears to represent an ape or early hominin that walked on two legs before any known African hominin, but the evidence is far from conclusive News