This expanded third edition features a preface by Roger O'Neill, an introduction by Freeman Dyson, and essays by top experts in the field of space research, including Roger O'neill, David Gump, Peter Glasser, Margo Deckard, George Friedman, Rick Tumlinson and John Lewis. Man's on-going conquest of the solar system has been much publicized for its miraculous accomplishments. What is generally less publicized are the potential uses of space beyond simply landing men on another planet. "Flags and foot prints" is something we can all be proud of, but the true value of near-Earth space lies with the possibilities for manufacturing and colonization. Processes not possible on Earth, because of atmosphere and gravity, can be employed in space to produce unique and highly desirable commodities. Habitats built in space, occupying the same orbit as the moon and made primarily from lunar raw materials, can be the necessary answer to our desperate, ever-increasing needs for living and agricultural areas. Gerard K. O'Neill is universally recognized as the father of the "O'Neill colony" concept. Beginning in the 1970's, he took the original concepts and built from them a complete, realistic and attainable plan - a plan to orbit permanent colonies at the L4 and L5 Lagrange points in near-Earth space, where everyday people would live, work and play in comfort and safety in an environmentally satisfying world. In this 3rd edition of The High Frontier, is O'Neill's original blueprint for the future, accompanied by new chapters presenting the up-to-date technologies and social considerations that impact upon and further justify the plan. This is a vision of a possible hopeful future that could already have come to pass if the human race had committed to it - it is still a source of hope for the future. Space and all its advantages need not be limited to only those with "the right stuff", it should and can be for all of us. Includes: CD-ROM featuring: Presentations by Gerard O'Neill and the Space Studies Institute. More than an hour of MPEG video.