‘Catalyst’ season 2 premiere: Aging with Autism

Men with autism confront challenges of aging with a neurological condition that impairs their communication skills, like facial expression, language, and social conversations. To understand the risks of aging with autism, neuroscientist Blair Braden, Ph.D. tracks their brain activity in a multi-year study.

WATCH: See more from season 2 of “Catalyst”

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Blair Braden, Ph.D.

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NOVA “Ancient Maya Metropolis”

NOVA Ancient Maya Metropolis

The ancient ancestors of today’s Maya people thrived in large sophisticated cities across Central America for centuries. Why, around 750 CE, did they begin to abandon many of their major cities?

American Experience “Roberto Clemente”

Roberto Clemente warming up to bat

“Roberto Clemente,” a documentary about an exceptional baseball player and committed humanitarian who challenged racial discrimination to become baseball’s first Latino superstar.

Nova “Alaskan Dinosaurs”

NOVA Dinosaurs

A team of intrepid paleontologists discovers that dinosaurs thrived in the unlikeliest of places—the cold and dark of winter in the Arctic Circle.