For this Christmas edition of New Tech City, a look back at two of our favorite segments from 2013. If you're like millions of other shoppers, you probably ordered at least a few gifts on the online retailer Amazon this holiday season. And even if your packages weren't delivered by drones, you won't want to miss my interview with Bloomberg Businessweek senior writer Brad Stone about his book The Everything Store: Jeff Bezos and the Age of Amazon. And it's not just about how Bezos's ingenious (sometimes controversial) tactics for selling us everything under the sun, but also insights into the CEO's aspirations for space travel and the giant clock he's building in a remote part of the world. Plus, a look at the startup Nextdoor, it wants to be a kind of Facebook for neighborhoods. Will you be its friend?