It sounds like a Hollywood blockbuster: a deadly asteroid is on a collision course with Earth. But in reality, it's only a matter of time before a giant space rock threatens to wipe out civilization. An asteroid took out the dinosaurs sixty-five million years ago. Are we next? This episode analyzes the threat and explores the many ways--from a nuclear bomb to ingenious new technology--that experts are proposing to stop Armageddon

Polley is both filmmaker and detective as she investigates the secrets kept by a family of storytellers. She playfully interviews and interrogates a cast of characters of varying reliability, eliciting refreshingly candid, yet mostly contradictory, answers to the same questions. As each relates their version of the family mythology, present-day recollections shift into nostalgia-tinged glimpses of their mother, who departed too soon, leaving a trail of unanswered questions. Polley unravels the paradoxes to reveal the essence of family: always complicated, warmly messy and fiercely loving.
Stories We Tell explores the elusive nature of truth and memory, but at its core is a deeply personal film about how our narratives shape and define us as individuals and families.

Space isn't vast and empty space but a dynamic, cosmic storm. It's a storm that could kill us, but without it we wouldn't be here at all. This is a story about the weird connections, the near misses, the lucky breaks that created this amazing world. For 4.5 billion years our planet has been battered and bruised and punched and pummeled but we're still standing. It's actually the battle that's built us and this is the tale of the tape.
Ever wonder how our planet got here? It was born in a cosmic storm. The violence could have destroyed us, but instead it made us.

Witness the secret powers of extraordinary animals, experience the world as they do and see the SUPER/NATURAL side of nature as never before. Executive produced by James Cameron and narrated by Benedict Cumberbatch, this series uses the scientific innovations and leading-edge filmmaking technology to reveal the secret powers and super-senses of the world’s extraordinary animals. See flowers in bee-vision to eavesdropping on conversations between elephant seals to soaring the length of a football field with glow-in-the-dark squirrels.
They say in nature that only the strongest survive. But when cooperation and communication bring animals and plants together and superpowers combine even the most vulnerable can become unstoppable. If you think you know nature, think again.

For decades some have suspected that there might be others out there, intelligent beings capable of communicating with us, even visiting our world. It might sound like science fiction, but today scientists from across the globe are scouring the universe for signals from extraterrestrials. Horizon obtained exclusive access to film researchers at the Green Bank Telescope searching for radio signals from Tabby's Star, a star so mysterious that some scientists believe it might be surrounded by a Dyson Sphere, a vast energy collector built by advanced aliens.

Discoveries of new planets have revealed countless worlds much stranger than Earth. Some of these strange worlds don’t have stars; others are made out of diamonds. Will we ever find a planet like Earth, or are these distant worlds stranger than fiction?