Syliva Engdahl on space - Essays, quotes, and a radio interview from science fiction author Sylvia Engdahl, about the importance of expanding beyond Earth. Space Colonization and SETI - Interview with Gerard K. O'Neill by John Kraus of COSMIC SEARCH. National Space Society: Statement of Philosophy - Vision of "people living and working in thriving communities beyond the Earth". Space and Human Survival (Sylvia Engdahl) - An essay by science fiction author Sylvia Engdahl on why colonizing space is essential to human survival. Space and survival - Wikipedia, the free encyclopedia - Encyclopedia article on the relationship between the colonization of space and the long-term survival of the human species. Sagan's rationale for human spaceflight - The Space Review - Essay describes space scientist Carl Sagan's thoughts on why human flights to space should continue. The top Three Reasons for Humans in Space - Short manifest for space colonisation. The Space Review: The Space Flag - Article by Michael Huang suggesting a new "space flag" as a rallying point for human colonization of space. The Political Economy of Very Large Space Projects by John Hickman, Ph.D. - Explanation of why large space projects (such as solar power satellites, O'Neill colonies, etc) will necessarily be government funded public works, at least at first, rather than created through pure private enterprise. Space Quotes to Ponder - Over 100 brief quotations explaining why expansion of civilization into space is essential to the future survival and evolution of humankind. Interstellar Ark - An analysis of methods for interstellar travel, with a focus on perhaps the most realistic option for success - a large vehicle capable of sustaining thousands of inhabitants for hundreds of years. Death and Time Travel - Essay, with interesting illustrations, on suspended animation as a route to colonizing the stars. Colonies in space may be only hope, says Hawking - Interview with Britain's Daily Telegraph in which eminent cosmologist Stephen Hawking warns that the human race is likely to be wiped out before the millennium is out unless we set up colonies in space.