Contents

19 June 2015
Vol 348, Issue 6241

About The Cover

Cover image expansion

COVER Olive baboon (Papio anubis) troops travel many kilometers each day as a group, remaining together even though group members often disagree about when and where to move. High-resolution GPS tracking of almost all members of a single baboon troop reveals that movement decisions are shared, and despite differences in rank and social status among group mates, no single individual dominates these choices. See page 1358.
Photo: Manoj Shah/Getty Images