I chat with psychologist Dr. Michael McCullough about morality, empathy, and why strangers are kind to each other. 

Follow Mike on Twitter:

https://twitter.com/ME_McCullough

Mike's website:

https://psychology.ucsd.edu/people/profiles/mmccullough.html

Mike's new book:

https://www.amazon.com/Kindness-Strangers-Selfish-Invented-Moral/dp/0465064744