Addressing a field that has been dominated by astronomers, physicists, engineers, and computer scientists, the contributors to this collection raise questions that may have been overlooked by physical scientists about the ease of establishing meaningful communication with an extraterrestrial intelligence. These scholars are grappling with some of the enormous challenges that will face humanity if an information-rich signal emanating from another world is detected. By drawing on issues at the core of contemporary archaeology and anthropology, we can be much better prepared for contact with an extraterrestrial civilization, should that day ever come.

When first published, Marshall McLuhan's Understanding Media made history with its radical view of the effects of electronic communications upon man and life in the twentieth century.

“To follow the journeys made by Mackay and Evans up the Missouri and across the plains in 1795–97 is to begin to appreciate the kind of world Lewis and Clark found when they voyaged up the river in 1804. . . . Of all those waterways, none has captured the American imagination more than the Missouri. . . . It is a river of promise, of dreams, and of dreams denied.” –James P. Ronda, from the Foreword When Mackay and Evans returned to Spanish St. Louis in 1797, they were hailed as “the two most illustrious travelers in the northern parts of this continent.” Ironically, though the findings of Mackay and Evans were responsible for much of the early success of Lewis and Clark in their expedition, the adulation that followed Lewis and Clark’s successful return completely eclipsed Mackay and Evans’s reputations. In Prologue to Lewis and Clark, W. Raymond Wood narrates the history of this long-forgotten but important expedition up the Missouri River. The Mackay and Evans expedition was more than an exploratory mission. It was the last effort by Spain to gain control over the Missouri River basin in the decade before the United States purchased the Louisiana territory. In that respect, it failed. But the expedition was successful as a journey of exploration. The maps and documents they created later provided the Lewis and Clark expedition with invaluable information for its first full year. Consolidating a collection of eighteen contemporary documents relating to the Mackay and Evans expedition as well as his own research and analysis, Wood provides an in-depth examination of the expedition’s background, execution, and final results. Volume 79 in the American Exploration and Travel Series

M. C. Roco and W.S. Bainbridge In the early decades of the 21st century, concentrated efforts can unify science based on the unity of nature, thereby advancing the combination of nanotechnology, biotechnology, information technology, and new technologies based in cognitive science. With proper attention to ethical issues and societal needs, converging in human abilities, societal technologies could achieve a tremendous improvement outcomes, the nation's productivity, and the quality of life. This is a broad, cross cutting, emerging and timely opportunity of interest to individuals, society and humanity in the long term. The phrase "convergent technologies" refers to the synergistic combination of four major "NBIC" (nano-bio-info-cogno) provinces of science and technology, each of which is currently progressing at a rapid rate: (a) nanoscience and nanotechnology; (b) biotechnology and biomedicine, including genetic engineering; (c) information technology, including advanced computing and communications; (d) cognitive science, including cognitive neuroscience. Timely and Broad Opportunity. Convergence of diverse technologies is based on material unity at the nanoscale and on technology integration from that scale.

How the World Changed Social Media is the first book in Why We Post, a book series that investigates the findings of anthropologists who each spent 15 months living in communities across the world. This book offers a comparative analysis summarising the results of the research and explores the impact of social media on politics and gender, education and commerce. What is the result of the increased emphasis on visual communication? Are we becoming more individual or more social? Why is public social media so conservative? Why does equality online fail to shift inequality offline? How did memes become the moral police of the internet? Supported by an introduction to the project’s academic framework and theoretical terms that help to account for the findings, the book argues that the only way to appreciate and understand something as intimate and ubiquitous as social media is to be immersed in the lives of the people who post. Only then can we discover how people all around the world have already transformed social media in such unexpected ways and assess the consequences

The deployment of a large number of soldiers, police officers and civilian personnel inevitably has various effects on the host society and economy, not all of which are in keeping with the peacekeeping mandate and intent or are easily discernible prior to the intervention. This book is one of the first attempts to improve our understanding of unintended consequences of peacekeeping operations, by bringing together field experiences and academic analysis. The aim of the book is not to discredit peace operations but rather to improve the way in which such operations are planned and managed.