"the search for alien contact in the new millenium", Ben Bova, Byron Preiss, editors. published by - ibooks
Also available through Barnes and Noble
the Blind Watchmaker
by Richard Dawkins. Just about the all time BEST explanation of evolution in print. Available through Barnes and Noble
Extraterrestrial Intelligence
by Jean Heidemann, Cambridge University Press. Available through Barnes and Noble
Is Anyone Out There?
by Frank Drake and Dava Sobel. Available through Barnes and Noble
Practical Astronomy With Your Calculator
by Peter Duffet-Smith, published by Cambridge University Press. Available through Barnes and Noble. Everything you ever needed to know about locating objects in the sky. Assumes some knowledge of astronomy. Lots of useful information but may not be the best place to start.
Rare Earth
by Peter D. Ward and Donald Brownlee. Why complex life is rare in the universe. Barnes and Noble