In a blog post, Neal Stephenson says it's time that people develop a new medium, "one in which three-dimensionality is a reality and not just an illusion laboriously cooked up by your brain." Madeleine Ball/NPR hide caption

itoggle caption Madeleine Ball/NPR

Ben Bernanke is seen leaving his Washington, D.C., office on Jan. 31, his last day as chairman of the Federal Reserve. Saul Loeb/AFP/Getty Images hide caption

itoggle caption Saul Loeb/AFP/Getty Images