So, a friend of mine who is a Dr. gave my DH the following book and I wanted to share:
https://www.amazon.com/Brain-Rules-Baby-Raise-Smart/dp/0979777755/ref=tmm_hrd_title_0
All of the information is based on replicated, empirical research...and he is really enjoying the book. It is geared towards the general public, but if your DH is a scientist or nerdy like mine he may especially like that it is research-based. I thought I would share the title in case anyone else has a DH looking for some baby books.
Re: Book recommendation for DHs...especially nerds