TY - JOUR T1 - A brush fire feedback loop for the ramp-like rise in hominin brain size that began 2.4 million years ago JF - bioRxiv DO - 10.1101/053827 SP - 053827 AU - William H. Calvin Y1 - 2016/01/01 UR - http://biorxiv.org/content/early/2016/05/18/053827.abstract N2 - ER -