“Catalyst” connects with a geologist who examines rock samples and oxygen molecules to study planet Earth’s “Great Oxidation Event” 2.5 billion years ago.
The charming Father Brown returns to solve more mysteries in the sleepy Cotswold village of Kembleford. The new season starts Saturday, Sept. 14, at 7 p.m. on Arizona PBS.
"Great Performances at the Met" brings the best of the Metropolitan Opera into the homes of classical music fans across the United States.
Historian Ed Ayers takes viewers to the sites of complex and evocative chapters in American history, where new stories are being written — one tour, one museum, one play, one protest at a time.