Darwin's Blind Spot: Evolution Beyond Natural Selection

by Frank Ryan

A book about how some scientists believe that there are other factors outside of natural selection ("survival of the fittest") are involved like symbiosis - differing species working together.

Some others can write about it better than I can.

http://www.amazon.com/Darwins-Blind-Spot-Evolution-Selection/dp/0618118128/ref=sr_1_1?ie=UTF8&s=books&qid=1289003606&sr=1-1