Welcome to the 30 Day Challenge for July, where we’ll be looking at the STEM fields: Science, Technology, Engineering, and Math. I originally conceived of the as the Science & Math Challenge so those two categories will get more attention, but we will touch on all of them.

Today we want to know about your favorite nonfiction biology or social science book. For our purposes this includes general biology, ecology, medicine, sociology, psychology, etc. If for whatever reason it didn’t seem to fit yesterday you can talk about it here.

What are your favorites? Is there one particular subject you tend to read about, or are you all over the map? Has a science book ever changed your mind about something in a major way?

Bonus: Favorite biology or social science book for kids.

Bonus bonus: What is your relationship with popular science books in general?