I read Freakenomics and Maze Runner and really liked them, Maze runner more so for the plot than characters.
I have Thinking Fast and Slow but I can't get into it. :S
It's weird but sometimes I feel awkward reading YA fiction. I used to read so much in middle school/elementary/even Frosh year and now I just feel strange when I do it, maybe cuz no-one around me really reads.
oh well! Thanks for the suggestions and I'll definitely check out the other two as well