Season 52

Can science reveal the secrets of mysterious objects seen in our skies?

Follow the race to build a world-class airport on the site of one of America’s busiest flying hubs.

Fossils reveal how birds survived the killer asteroid and became today’s only living dinosaurs.

A long-lost ancient cemetery opens the door to a unique period in Egyptian history.

Archaeologists uncover new truths about Pompeii, a wealthy Roman playground with dark secrets.

Follow the investigation into the deadly container ship collision that closed the Port of Baltimore.

Explore key military technologies in the American colonies’ fight for freedom.

Follow scientists in a quest to understand how complex forest ecosystems can help cool our planet.

This two-hour feature documentary produced by acclaimed Oscar-nominated filmmaker Stanley Nelson traces the roots of systemic racism in our medical system and the biological impacts of discrimination on the body to understand why Black Americans experience such disproportionately poor health outcomes - and did long before COVID-19 highlighted the devastating health disparities in our country.

Surprisingly little is known about the behavior of cars and drivers in uncontrolled, real-world accidents, despite rigorous testing in laboratory-controlled crashes. Now, a first-of-its-kind experiment aims to discover what really happens in a multi-vehicle pileup and how cars and driving could be made safer.

Surprisingly little is known about the behavior of cars and drivers in uncontrolled, real-world accidents, despite rigorous testing in laboratory-controlled crashes. Now, a first-of-its-kind experiment aims to discover what really happens in a multi-vehicle pileup and how cars and driving could be made safer. In the second episode of this two-part special, forensic analysis is put to the test. Real-life crash scene investigations have very little data to work with, so are they accurate? And what can we learn about car safety when there is actual data to show exactly what happened?