Sir David Attenborough and Sir Michael Palin reflect on the impact of the Covid-19 pandemic and what it has taught us about global co-operation in tackling some of the biggest challenges our planet is faced with.

David Attenborough recounts his very personal experiences with the mountain gorillas of Rwanda. Ever since they were discovered over a century ago, these remarkable creatures have been threatened by loss of habitat, poaching, disease and political instability. But despite all odds their numbers have increased. David tells the extraordinary tale of how conservationists like Dian Fossey have battled to save the mountain gorilla from the brink of extinction.

The remarkable story of one woman raising an army of over 10,000 people to help save one of the rarest birds on Earth from the depths of extinction.

Sir David Attenborough is larger than life, his distinctive voice as recognisable as his name. In this program, renowned Australian journalist Ray Martin turns the cameras away from the beloved wildlife Sir David has spent his life documenting and onto the man himself. The show is an edited interview culled from a series of sold-out events held in theatres across Australia in 2012 and 2013.

Here is what happened in a Toronto classroom when teachers occupied the children's desks and children became the teachers. The film grew out of another, Mrs. Ryan's Drama Class, where young children found their way into creative drama. There is food for thought in this impromptu reversal of roles.

Sir! No Sir! is a documentary film about the anti-war movement within the ranks of the United States Military during the Vietnam War. It consists in part of interviews with Vietnam veterans explaining the reasons they protested the war or even defected. The film tells the story of how, from the very start of the war, there was resentment within the ranks over the difference between the conflict in Vietnam and the "good wars" that their fathers had fought. Over time, it became apparent that so many were opposed to the war that they could speak of a movement.

Sir Sir Sarla explores the complexities of love through three interconnected lives. University students Sarla and Phanidhar share a deep affection for their professor, Palekar, but in very different ways. Sarla is romantically in love with him and dreams of a future together, while Phanidhar's feelings are a conflicted mix of admiration, resentment, and blame. He believes the professor's decision to distance Sarla and encourage her marriage to Keshav has left all their lives unfulfilled. As Sarla finds herself neglected in her marriage, old wounds resurface, leading to a series of confrontations that leave the audience questioning whether Professor Palekar's choices were truly the right ones.

In his first visit to Nigeria, labelled the ‘Giant of Africa’, Michael Palin embarks on an epic 1,300-mile journey. It’s a country that encompasses stunning landscapes and wildlife, a variety of cultures and faiths, and a diverse population who speak over 500 languages

Michael visited Venezuela at a crucial moment in the country’s history. It is often called the most dangerous country in South America, where soaring inflation and high murder rates have led over seven million people to flee the country in the last ten years.

Sir is a 1993 Bollywood film directed by Mahesh Bhatt starring Naseeruddin Shah, Pooja Bhatt, Atul Agnihotri and Paresh Rawal.