Here's Walmart's $1 trillion secret

This is The Takeaway from today's Morning Brief, which you can sign up to receive in your inbox every morning along with: What we're watching What we're reading Economic data releases and earnings I get to chat with a ton of fascinating people each week here at Yahoo Finance. It's one of the perks of the gig. Every day I leave our New York City headquarters smarter than the day before. Phoebe Gates, daughter of Microsoft's (MSFT) Bill and Melinda Gates, took me inside her new startup, Phia. It's a ...