So little time... So much to know! Unless you are super knowledgeable in biology and evolution you will learn so much from this book! (As an example - did you know that Mother's nipple not only gives milk to the child, but actually uptakes the baby's saliva so it can be analyzed and from that feedback the milk can be adjusted meet baby's current needs?) Amazing facts abound! Don't be daunted by its size; The bibliography is bigger than the text!