'Why Information Grows': A Physicist's Approach to Economics 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 One physicist argues it's not just labor and products, but information and energy that ultimately drive economic growth. ( microvector / Shutterstock ) Produced by Oliver Lazarus and Mythili Rao Produced by PRI and WNYC