Stonehenge is an icon of prehistoric British culture, an enigma that has seduced archaeologists and tourists for centuries. Why is it here? What is its significance? And which forces inspired its creators? Now a group of international archaeologists led by the University of Birmingham and the Ludwig Boltzman Institute in Vienna believe that a new state-of-the-art approach is the key to unlocking Stonehenge's secrets. For four years the team have surveyed and mapped every monument, both visible and invisible, across ten square kilometres of the sacred landscape to create the most complete digital picture of Stonehenge and the surrounding area over millennia. Operation Stonehenge takes the viewer on a prehistoric journey from 8000BC to 2500BC as the scientists uncover the very origins of Stonehenge, learning why this landscape is sacred, preserved and has been revered by following generations.

After a terrified toy salesman is mysteriously attacked and brought to the hospital, clutching the year's most popular Halloween mask, Dr. Daniel Challis sets out to investigate the strange events and finds himself thrust into a nightmarish conspiracy.

Professor Alice Roberts follows a decade-long historical quest to reveal a hidden secret of the famous bluestones of Stonehenge. Using cutting-edge research, a dedicated team of archaeologists led by Professor Mike Parker Pearson have painstakingly compiled evidence to fill in a 400-year gap in our knowledge of the bluestones, and to show that the original stones of Britain’s most iconic monument had a previous life. Alice joins Mike as they put together the final pieces of the puzzle, not just revealing where the stones came from, how they were moved from Wales to England or even who dragged them all the way, but also solving one of the toughest challenges that archaeologists face.

American professor John Holden arrives in London for a conference on parapsychology only to discover that the colleague he was supposed to meet was killed in a freak accident the day before. It turns out that the deceased had been investigating a cult lead by Dr. Julian Karswell. Though a skeptic, Holden is suspicious of the devil-worshiping Karswell. Following a trail of mysterious manuscripts, Holden enters a world that makes him question his faith in science.

NOVA takes you inside the operating room to witness organ transplant teams transferring organs from donors to recipients. Meet families navigating both sides of a transplant, and researchers working to end the organ shortage. Their efforts to understand organ rejection, discover ways to keep organs alive outside the body, and even grow artificial organs with stem cells, could save countless lives.

Recent investigations into the human remains found at Stonehenge have provided new insights into the lives of the inhabitants of this highly symbolic site. For the first time, the demise of a prehistoric society can be traced. What can remains from the period between 3,000 and 2,000 BC tell us about life at that time?

Shot at Stonehenge, the mysterious landmark that we now know must have been erected thousands of years ago purely to serve as the setting for the last act of Spinal Tap. The ultimate meeting of rock mythology and cinematic scale. An iconic band performing at one of the world’s most legendary landmarks and turned up to eleven.

Orange-and-black wings fill the sky as NOVA charts one of nature's most remarkable phenomena: the epic migration of monarch butterflies across North America. To capture a butterfly's point of view, NOVA’s filmmakers used a helicopter, ultralight, and hot-air balloon for aerial views along the transcontinental route. This wondrous annual migration, which scientists are just beginning to fathom, is an endangered phenomenon that could dwindle to insignificance if the giant firs that the butterflies cling to during the winter disappear.

One of history's most enigmatic mysteries is unraveled in this fascinating one-hour special. Stunning CGI and spectacular reconstructions reveal a picture of life in Neolithic Europe 5,000 years ago. The result is a challenging and refreshing new theory about how prehistoric ancestors came to terms with a changing world.

Join historian Dan Snow as he pieces together the story of Stonehenge, revealing how modern discoveries have started to solve its many mysteries.

One of the world’s greatest ancient enigmas, the Nazca lines are a dense network of criss-crossing lines, geometric shapes, and animal figures etched across 200 square miles of Peruvian desert. Who created them and why? Ever since they were discovered in the 1920s, scholars and enthusiasts have raised countless theories about their purpose. Now, archaeologists have discovered hundreds of long-hidden lines and figures as well as evidence of ancient rituals, offering new clues to the origins and motivations behind the giant desert symbols.

This fascinating and odd structure has many experts debating why it exists and how these mysterious people moved such enormous stones. Each year over a million people from around the world travel to Wiltshire, England, to see Stonehenge, the most recognizable prehistoric monument in Europe, and to experience its strange presence.