Carl Sagan was a gifted man. No less than four different degrees in science and a gifted communicator to boot. But prehaps most striking is how he saw many of the problems we experience today, nearly a quarter of a century ago. For anyone who is interested in thought leadership, his thinking and communication shows how to do it.

Carl Sagan was a gifted man. No less than four different degrees in science and a gifted communicator to boot. But prehaps most striking is how he saw many of the problems we experience today, nearly a quarter of a century ago. For anyone who is interested in thought leadership, his thinking and communication shows how to do it.