Twice in a Lifetime

Explore what it will be like to be human one million years into the future. Today’s brightest futurists, scientists, scholars and notable science fiction writers guide viewers through the very latest advances in technology, ideas and innovations that likely will power the evolution of our species.

Eerie encounters, bizarre disappearances, haunting events and more perplexing phenomena are explored in this chilling investigative docuseries.

Revisit the epic heroes, villains and moments from across the MCU in preparation for the stories still to come. Each dynamic segment feeds directly into the upcoming series — setting the stage for future events. This series weaves together the many threads that constitute the unparalleled Marvel Cinematic Universe.

Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings to continued mass sightings in the US, each episode gives historic depth to the questions, speculations, provocative controversies, first-hand accounts and grounded theories surrounding this age old debate.

Rescue 911 is an informational reality-based television series that premiered on April 18, 1989 and ended on August 27, 1996. The series was hosted by William Shatner and featured reenactments of emergency situations that often involved calls to 911. Though never intended as a teaching tool, various viewers used the knowledge they obtained watching the show. Two specials, titled "100 Lives Saved" and "200 Lives Saved," were dedicated to viewers who had written to CBS with their stories on how the knowledge they obtained watching the show allowed them to save the life of someone else. At least 350 lives have been saved as a result of what viewers learned from watching it.

Investigates a wide range of historically compelling topics and the mysteries surrounding each including the Titanic, D.B. Cooper, Roswell, John Wilkes Booth, and more. Fresh, new evidence and perspectives will be showcased, such as never-before-released documents, personal diaries and DNA evidence.

A British genealogy documentary series in which celebrities trace their ancestry, discovering secrets and surprises from their past.

The show features accounts of individuals and groups caught in dangerous scenarios, presented both through interviews and dramatic reenactments. The main focus is how the survivors survived and the decisions they made that kept them alive.

Australian host Steve Irwin and his wife Terri run a wildlife refuge. Their shared passion is educating the world about wildlife, including the much feared crocodile and numerous venomous snakes. Steve's specialty is the capture and relocation of crocodiles. No animal appears too threatening to Steve, his true respect for animals is the foundation for everything he does.

The untold true story behind the Cold War race to put man into space.

In this genre-bending tale, Errol Morris explores the mysterious death of a U.S. scientist entangled in a secret Cold War program known as MK-Ultra.

David Attenborough presents a documentary series exploring how animals meet the challenges of surviving in the most iconic habitats on earth.