Channel 4

Chinese fast fashion giant Shein's success story is unrivalled, but at what cost? Iman Amrani investigates the famously secretive business, as hidden cameras go inside factories for the first time.

David Jason narrates a look at the origins and legacy of the iconic aircraft that played a pivotal role in the Second World War.

Mecca, the city that welcomes close to a quarter of a million pilgrims every fortnight, and the birthplace of Islam's founder. The Seven Wonders of the Muslim World meets the man who massages the weary feet of the faithful, the muezzin who makes the call to prayer and the head of the religious police. The programme also talks to the pilgrims as they arrive in Mecca, to help understand the thinking of modern Muslims and their deep connections with this holiest of Muslim shrines.

The discovery of China's Terracotta Army in 1974 captured the imagination of the world. But that first dig only revealed a fraction of this enormous and extraordinary treasure. Since then, scientists have resumed work on the site, and their research has turned up a series of new discoveries about the warriors and the people who made them over two millennia ago. With exclusive access to pioneering research conducted by UCL and the Terracotta Army Museum, this documentary reveals those new secrets.

With access to the first nationwide survey and state-of-the-art drones mapping the Great Wall of China, this documentary offers new evidence that reveals its extraordinary magnitude, rewrites its millennia-long history and decodes its complex signals system. Using cutting-edge chemistry, the programme also finds out what has kept the wall standing for so long - a simple cooking ingredient found in kitchens across the world.

Arguably the world's most famous work of art, millions of people visit it every year. Until now however nobody has been able to explain exactly what the Sistine Chapel's ceiling is actually trying to tell us. Though important and timely the film (airing as it does to celebrate the 500th birthday of the work) it is also the product of the detective work and obsessive scholarship by art critic Waldemar Januszczak which spans the last 30 years. During this time he has been trying to unlock the secrets of Sistine Chapel's complex pictorial codes and sumptuous iconography.

Presented by eminent historian David Starkey, Elizabeth explores the turbulent life and times of England's Virgin Queen by augmenting newly shot re-creations of famous events with artistic interpretations of Good Queen Bess, glimpses of British landmarks and period artifacts, and incisive passages quoted from historical records. Elizabeth's reign began in the late 16th century, with her beloved England threatened from both without and within.

Art meets science and detective story lifting the lid on some of the most controversial stories in the art world. Pioneering forensic scientist Dr Maurizio Seracini has made his name by ingeniously adapting the latest medical and military technology to reveal the secrets of great artistic masterpieces. In this film he sets out to investigate the unsolved mysteries surrounding some of the works of genius produced by world famous Renaissance artist Leonardo Da Vinci.

In this ground-breaking film, historian Tom Holland explores how a new religion - Islam - emerged from the seedbed of the ancient world, and asks what we really know for certain about its rise. The result is an extraordinary detective story. Traditionally, Muslims and non-Muslims alike have believed that Islam was born in the full light of history. But a large number of historians now doubt that presumption, and question much of what Muslim tradition has to tell us about the birth of Islam.

Documentary following a pioneering scientific expedition into the Arctic Circle to recover previously unattainable data on the effects of climate change now and in the future. In one of the harshest environments on the planet, the team braves the brutal Arctic winter to search for answers locked within the sea ice, ocean and atmosphere that will allow them to understand for the first time how this landscape regulates temperatures across the globe.