As modern humans spread around the globe, the Americas represented the final continental frontier. These first colonists were modern in appearance and technology, but who were they and when did they arrive? Traditional answers to these questions have come under increasing scrutiny in the face of new findings from artifacts, skeletal remains, genes, and languages. The peopling of the Americas has become one of archaeology's most compelling and contentious subjects, as these new lines of evidence reveal a more complex solution. In this volume, distinguished scientists from the fields of archaeology, physical anthropology, paleoecology, genetics, and linguistics assess the latest evidence from Siberia to Chile and offer provocative ideas for how, when, and where humans entered the Americas. Contributors include: Bruce Bradley, Linda Brown, Scott A. Elias, Tom D. Dillehay, John Douglas, Jon M. Erlandson, Nina G. Jablonski, David J. Meltzer, D. Andrew Merriwether, Johanna Nichols, Joseph F. Powell, Anna C. Roosevelt, Jack Rossen, Dennis Stanford, D. Gentry Steele, and, Christy G. Turner II. This title is distributed for the California Academy of Sciences.