2017: How Technology Changed the World Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email A woman walks past the Bitcoin ATM in Hong Kong, Thursday, Dec. 21, 2017. ( Kin Cheung / AP Photo ) Produced by Maggie Freleng Hosted by Todd Zwillich Produced by PRI and WNYC