@BillGates: What if we really are all in this together? In this fascinating book, @NAChristakis explains why and how humans evolved to work together: https://t.co/SkaMiLYjkn https://t.co/l8gzfoWYCu

http://twitter.com/BillGates

What if we really are all in this together? In this fascinating book, @NAChristakis explains why and how humans evolved to work together: https://t.co/SkaMiLYjkn pic.twitter.com/l8gzfoWYCu

— Bill Gates (@BillGates) July 29, 2019