The human race has reached an exciting threshold of history. We are the generation that is capable of spreading information instantly, almost everywhere in the world. Technology and culture are evolving in place of biology, and rapidly so. We can examine patterns of the past to make entertaining guesses at the future, and the prospects, though unpredictable, are exciting.

Carl Sagan Explains the Drake Equation, which attempts to estimate the odds of intelligent civilizations in our galaxy.