Miranda Kerr and Evan Spiegel: a marriage of mindfulness

It's not just another typical 'billionaire-meets-model nerd-fantasy pairing'. The Snapchat co-founder and supermodel are a study in contrasts, and as Snap faces its own diversity challenges, the pair are on a mission to address social ills and racial injustice. Christina Binkley, from The Wall Street Journal, interviews one of the most influential couples in the world.