Pale Blue Dot Author:Carl Sagan Pulitzer Prize-winning author Carl Sagan traces our exploration of space and suggests that our very survival may depend on the wise use of other worlds. This stirring book reveals how scientific discovery has altered our perception of who we are and where we stand, and challenges us to weigh what we will do with that knowledge. Photos, many in c... more »olor.« less
This edition of this book is on audio cassette which is recorded separately on each channel. This means you will need a stereo playback mechanism which allows you to switch all the way to the left and right speakers alternately.