Under Threat

With sea levels rising, four major cities are at risk of being submerged.

Powerful and resonant series that looks at how Hitler and the Nazis seized power in Germany and ushered in the death of democracy.

Hell Under the Sea is heading to new heights in Season 3 when series takes a deep dive into the undersea battles that changed the course of World War II.

Explores a popular and seemingly harmless app that has become a serious threat to the emotional and psychological wellbeing of the people who use it regularly.

The Christchurch terror attack brought to light the violent, disturbing right-wing extremist movement flourishing on the internet. Were authorities so focused on Islamic extremism that they failed to grasp this deadly threat?

Filmed over a year, this series captures Wales's varied wildlife and stunning landscapes, from the rugged mountains of the north to the seabird colonies off the west coast.

North Sea oil has been an invisible machine at the core of the UK. It now faces an uncertain future as activists and investors demand change. Is the era of North Sea oil over?

Simon Reeve travels from Alaska to Central America.

In a spellbinding journey of discovery, renowned zoologist Charlotte Uhlenbroek undertakes a unique animal experience as she travels to the planet's jungles and mountains and infiltrates some of the greatest wild primate groups, attempting to get physically closer to them than anyone has tried before. Using her skills, knowledge and expertise, Charlotte unravels the complex social and sexual dynamics of mountain gorillas, orang-utans, chimpanzees and baboons and pushes the boundaries of traditional camera techniques to bring viewers every detail of these magnificent animals' existence.

Dr. David Starkey presents the second series of his history of the British monarchy, beginning in the savage maelstrom of the Wars of the Roses. The Tudors eventually triumph, and carry the crown of England to its peak. Then the House of Stuart takes the throne, uniting England and Scotland but eventually mishandling both countries.