To answer the original question - Netflix has documentaries on the subject, or at least they did 2-3 years ago. When my twins were 3-5, one of them really enjoyed watching documentaries about earth and life on earth.

He watched various documentaries regarding the development of the earth, and then moved into documentaries regarding the development of life on earth (beginning with the sea, then deep sea, then dinosaurs, then prehistoric man.) Some of them were quite detailed in the theories presented, and he loved it.

Last edited by momoftwins; 09/22/14 06:22 PM.