Maritime archaeologists and historians go in search of the crucial component in the Atlantic Slave Trade:

Return of The Buffalo: Restoring American prairie
The vast area of the American prairie tells the story of a 150-year experiment: the settlement of the American Midwest. Nowadays, ghost towns define the appearance of deserted swathes of land.

The documentary film The Typewriter is an ode to a marvelous machine that changed the world, and the surprisingly enduring culture that valiantly attempts to preserve its legacy and save it from cultural extinction.

Upstream is a film by writer Robert Macfarlane and director Rob Petit.

This revealing film examines how human activity is setting off dangerous warming loops that are pushing the climate to a point of no return - and what we need to do to stop them.

Gives unprecedented access to the friendship between His Holiness the Dalai Lama and the late Archbishop Tutu.

Ever wonder what it takes to fly the President's plane?

Profiles arguably Britain's most groundbreaking dance pioneer.

The Colorado River is the foundation of the American Southwest.