The Genius of Srinivasa Ramanujan

Sue Perkins immerses herself in the complex life of Kolkata and sees how it is reinventing itself as a megacity with a reputation for eccentricity, culture and tolerance.

Hard Problems is about the extraordinary gifted students who represented the United States in 2006 at the world's toughest math competition: The International Mathematical Olympiad (IMO). It is the story of six American high school students who competed with 500 others from 90 countries in Ljublijana, Slovenia. The film shows the dedication and perseverance of these remarkably talented students, the rigorous preparation they undertake, and the joy they get out of solving challenging math problems. It captures the spirit that infuses the mathematical quest at the highest level.

A filmmaker's insight into the biggest gathering on earth -the Kumbh Mela.

Somi is pregnant with her second child. A girl, she hopes. Together with her husband she prepares for this new phase of their parenthood. It means that their son has to go to school, but as an ex-Naxalite that is tough to achieve in contemporary India, where people like them are third-rate citizens. They lack the certificates and an opaque bureaucratic process doesn't help. Directors Isabella Rinaldi, Cristina Hanes and Arya Rothe of the NoCut Film Collective concentrate on Somi's close family ties, painting a portrait of ex-Naxalites in India. Once, Somi and her husband were communist rebels fighting for the rights of Indian tribes. However, to safeguard their family's welfare, they surrendered to the government in exchange for marginal compensation and simple accommodation.

The computer animation Outside In explains the amazing discovery, made by Steve Smale in 1957, that a sphere can be turned inside out by means of smooth motions and self-intersections. Through a combination of dialogue and exposition accessible to anyone who has some interest in mathematics, Outside In builds up to the grand finale: Bill Thurston's "corrugations" method of turning the sphere inside out.

The wildlife and cultures of southern Asia have been shaped by one of the greatest phenomena on Earth: the mighty monsoon winds that sweep across this vast region, turning drought into deluge. All life – human and animal – is dominated by this rampaging weather system. From the northern shores of Australia to the highest peaks of the Himalayas and the wind-blown deserts of northern India to the lush equatorial forests of Borneo, this series makes an exhilarating journey through the lands of the monsoon. Along the way, it offers a taste of the variety and colour of the different regions’ most extraordinary wildlife and cultures and the way they cope with the tumultuous weather. This is the story of a relationship between humans and nature that has grown across thousands of years – all living in the shadow of the monsoon.

A documentary on sufism

Since the rise to power of Hindu nationalists in 2014, India has been gradually moving away from democracy towards a regime where ethnic identity prevails. This transition is driven by Hindutva, a Hindu supremacist ideology embodied by Narendra Modi. For the past 10 years, Prime Minister Modi has relentlessly pursued his fascist policy based on Hindu supremacy. This ideology of hatred towards other religions in the country, particularly Islam, has also spread globally. Those who follow this belief want India to be only for Hindus, treating people of other religions, like Muslims or Sikhs as second-class citizens. Attacks against Christians have surged by 400% since Modi's election, accompanied by discriminatory laws targeting Muslims and widespread lynching incidents. Hindutva's influence permeates all levels of Indian society. This documentary thus unveils a darker side of India, far from its portrayal as the world's largest democracy and Gandhi's dream of peace among communities.

Without us noticing, modern life has been taken over. Algorithms run everything from search engines on the internet to satnavs and credit card data security - they even help us travel the world, find love and save lives. Mathematician Professor Marcus du Sautoy demystifies the hidden world of algorithms. By showing us some of the algorithms most essential to our lives, he reveals where these 2,000-year-old problem solvers came from, how they work, what they have achieved and how they are now so advanced they can even programme themselves.

What is striking when you talk with mathematicians is that sparkle in their eyes, and their sudden joyful voice trying to share with you a concept, a theory. They continuously use words such as invention, beauty, freedom. You then ask yourself : how such a rich language, this quasi-philosophical proposition about the world becomes rejected by a majority, 'the only discipline where one prides itself to be bad at it'!

After the Indian Ocean Tsunami of 2004, widowed women struggled to receive aid due to their social status. Following the story of Mrs. Manjula along with many other women from Tamil Nadu, the challenges faced by millions of widows across the country are illuminated. From being ostracized to denied basic rights and economic opportunities, widows in India endure a cycle of discrimination and marginalization. “Kalangarai” meaning "lighthouse" in Tamil, is an organization dedicated to empowering women through initiatives such as self-help groups and educational programs. Throughout the film, "Lighthouse" illustrates the emotional journeys and resilience of these women, as well as the active change that Kalangarai strives to achieve. This documentary urges global awareness and support for widowed women’s rights, as the women’s struggles depict the intersectionality of gender, poverty, and social injustice.

A brief but colorful travelogue of India's biggest cities following the partition of the country in 1947 at the end of the British Raj.

Dedičstvo krásy a biedy

The anti-Slumdog Millionaire in documentary form, "Buzz" charts the tumultuous rise of India's most famous tattoo artist as he struggles to overcome the demons of his poverty-stricken childhood through art.

Journey across India, a breath taking land shaped by a myriad of cultures, customs and traditions. Come face to face with the Bengal Tiger and explore the work of this majestic creature with stunning clarity. Soar over blue-hazed Himalayan peaks and sweep down towards the thundering Indian Ocean as we celebrate the power and beauty of India's greatest ambassador - the mighty Bengal Tiger.

Julia Robinson and Hilbert's Tenth Problem features a heroine driven by the quest to solve one of the central problems of modern mathematics. She rises above formidable obstacles to assume a leading role in her field. Julia Robinson was the first woman elected to the mathematical section of the National Academy of Sciences, and the first woman to become president of the American Mathematical Society. While tracing Robinson's contribution to the solution of Hilbert's tenth problem, the film illuminates how her work led to an unusual friendship between Russian and American colleagues at the height of the Cold War.

Amateur film of a road trip through northeastern India, showing traditional dances and a gigantic flower float.

A BBC documentary uncovers, for the first time, the original manuscript where Newton forecast the date of the end of the world. Newton, the father of modern mathematics, dedicated a large part of his life to a quest to decode the Bible which he believed to be the word of God. For over 50 years, he studied the Bible trying to unravel God's secret laws of the Universe. He was fanatical in his quest to discover the date for the Second Coming of Christ and the end of the world. Scholars have spent years trying to unravel Newton's writings on the Book of Revelation to establish when he thought the apocalypse was coming.

The making of the James Bond movie Octopussy (1983) in Udaipur, India during 1982.

Once facing extinction, Asia's last wild lions live dangerously close to India's villages.