Images: N. Spassov, D. Youlatos, M. Böhme, R. Bogdanova, L. Hristova, D. Begun The Graecopithecus femur from Azmaka, Bulgaria, (left ...

Nikolai Spassov, Dionisios Youlatos, Madelaine Böhme, Ralitsa Bogdanova, Latinka Hristova, David R. Begun: An early form of terrestrial hominine bipedalism in the Late Miocene of Bulgaria.

Crystals have repeatedly been found at archaeological sites alongside Homo remains. Evidence shows that hominins have been collecting these stones for as long as 780,000 years. Yet, we know that our ...