Science ( IF 41.845 ) Pub Date : 2020-10-16 , DOI: 10.1126/science.abe4107 Barbara J. King
Why, unlike other primates, did our ancestors begin to walk upright? What factors enabled Homo erectus to develop new cultural practices and, later, to give rise to our own species? As paleoanthropologist Meave Leakey explains in The Sediments of Time, understanding climate change is key in answering such questions. Reflecting on 50 years of research, largely at field sites around Lake Turkana in Kenya's Great Rift Valley, the book—co-written with Leakey's daughter Samira Leakey—is an engaging memoir in which fieldwork adventures appear alongside dense details of Ice Age cycles, ice core technology, fossil anatomy, and geological research.