Former Sen. David Perdue was sworn in as the U.S. ambassador to China. President Trump says he's entrusting Perdue to help ...

How long will the conclave last? NBC News’ Steve Kornacki explains the history behind past elections to pick a new pope, ...

Cardiologist and longevity researcher Dr. Eric Topol shares which simple, evidence-based habits can help us age healthier ...

White smoke means a new pope has been chosen, while black smoke signals that a two-thirds majority vote has not yet been reached.