NPR's A Martinez speaks with tech entrepreneur Bryan Johnson about the Netflix documentary "Don't Die: The Man That Wants To Live Forever," which portrays his quest to slow aging.

From Panama, NPR's Ari Shapiro discusses how Secretary of State Marco Rubio's visit to the region is being received and reaction to Trump's message that the U.S. intends to take the canal back.

From Panama, NPR's Ari Shapiro discusses how Secretary of State Marco Rubio's visit to the region is being received and reaction to Trump's message that the U.S. intends to take the canal back.

A team of scientists has shown it's possible to reduce inflammation in rheumatoid arthritis by stimulating the vagus nerve.

Security in New Orleans will be tight this week as the city gets ready to host the Super Bowl following the New Years Day truck attack on Bourbon Street that killed 14 people and injured dozens.