Mysteries Of Chronic Pain; Julián Castro Drops Out Of 2020 Race

Nearly 50 million people in the U.S. live with chronic pain, which is when a person's pain lasts longer than three months. National Geographic contributing writer Yudhijit Bhattacharjee joins us to discuss his reporting on the latest in pain research. And, Texas Democrat Julián Castro dropped out of the 2020 presidential race on Thursday. NPR's Scott Detrow joins us to discuss the latest from the campaign trail. That and more, in hour one of Here & Now's Jan. 2, 2020, full broadcast. You can find more at hereandnow.org, follow us on Twitter and join the conversation on Facebook.