CircleSpeak

Dan Snow uncovers the lost Vikings in America with Dr Sarah Parcak. As Sarah searches for Vikings across the Atlantic, Dan explores their journey 500...

This definitive music documentary, featuring a greatest hits soundtrack and bounty of classic performance clips, provides an inside look into how...

Interviewing cast and crew behind the scenes on UFO, this documentary lifts the lid on Gerry and Sylvia Anderson's first venture into live action...

Through interviews with leading psychologists and scientists, Neurons to Nirvana explores the history of four powerful psychedelic substances (LSD,...

Archaeologist Raksha Dave and historian Dan Snow return to Pompeii to gain special access to a variety of new excavations, including two...

Cleopatra - the most famous woman in history. We know her as a great queen, a beautiful lover and a political schemer. For 2,000 years almost all...

Herzog and cinematographer Peter Zeitlinger go to Antarctica to meet people who live and work there, and to capture footage of the continent's unique...

David Attenborough and scientist Johan Rockström examine Earth's biodiversity collapse and how this crisis can still be averted.

Calling All Earthlings explores a mid-century UFO cult led by one-time Howard Hughes confidante, George Van Tassel. Van Tassel claimed to have...

In the chaotic, highly emotional period after the First World War in 1918, the foreign ministers Gustav Stresemann (1878-1929) and Aristide Briand...

Rat Brain is a documentary that highlights Dr. John D. Douglass and his team's research at Seattle Pacific University on chronic stress' neurological...