Caroline Quentin: A Passage Through India

Recovery efforts to save imperiled creatures are spotlighted in this globe-trotting series.

This multi-part documentary explores the fascinating but seldom-seen world of underground caverns, tunnels, and more. From the tunnels once used by smugglers to evade the forces of the law, to the ancient underground cities created by mysterious peoples, these feats of engineering and wonder puzzle travelers to this day.

The South American continent is a land of great extremes, stretching from the Antarctic to the Equator. It has the planet's greatest river system, longest mountain chain, biggest and richest rainforest and driest desert. Using the latest camera techniques, including infrared night vision cameras, rarely seen animals are revealed, while a special aerial camera soars over the continent, revealing an entirely new perspective on its varied and dramatic landscape.

A look at aging successfully via the stories of six older adults living life by their terms.

Four kings from the House of Stuart sat on the English throne from 1603 to 1688. It was a time of great religious struggle and political instability. The Gunpowder Plot nearly wiped out King James I. The Thirty Years War broke out on the continent. A civil war erupted which led to the public beheading of King Charles I and the birth of a commonwealth headed by Oliver Cromwell. London was ravaged by the plague and the Great Fire of London. Throughout this series we look at the reign of the Stuarts through the powerful Wynn family at Gwydir Castle in North Wales, one of the best time capsules from that era. The story of the Wynn family reflects the turbulent history of this Stuart era. They had close connections with this new royal house and their status would rise and fall with the successes and failures of Stuart rule.

The centuries-long clash between Christian Europe and the Muslim Ottoman Empire is recalled via insights from historians, reenactments and visits to historical sites.