Usually, we're told to put our smartphones away before bedtime since it's supposed to be less disruptive to our sleep. But what if I told you that you could use your iPhone for good and to help you ...

By: Fabrizio Dell'Acqua, Edward McFowland III, Ethan Mollick, Hila Lifshitz-Assaf, Katherine C. Kellogg, Saran Rajendran, Lisa Krayer, François Candelon and Karim R. Lakhani ...