The Galactic Club: Intelligent life in outer space (The Portable Stanford series)

From the Book Jacket: "Do we have neighbors in outer space? Will we contact them? What will be their interest in us - friendly or hostile? Will we expand into space and play a grand future role there, bringing fertility to the galaxy? This lively book explores these questions and gathers in one place the offerings of the different specialties that delve into the possibilities of life in outer space...."