Did a cataclysmic event plunge humankind into the period known as the early Dark Ages? Scientists now believe the early Dark Ages may have been triggered by a natural event that occurred around 535 A.D. Science writer David Keys is convinced that the cause was a phenomenon of cataclysmic proportions. At the center of a complex chain of events seems to be "a loud bang" -- a volcanic explosion equal to "two thousand million Hiroshima size bombs." The subsequent environmental calamity, Keys believes, affected human civilization from Mongolia to Constantinople, precipitating plague, famine, death, great migration, the fall of the great Mexican city of Teotihuacan, the Anglo-Saxon victory over the Celts and perhaps even the rise of Islam. (UK / PBS) Released to video (VHS) as a single episode. Run time 1:50.

Did a cataclysmic event plunge humankind into the period known as the early Dark Ages? Scientists now believe the early Dark Ages may have been triggered by a natural event that occurred around 535 A.D. Science writer David Keys is convinced that the cause was a phenomenon of cataclysmic proportions. At the center of a complex chain of events seems to be "a loud bang" -- a volcanic explosion equal to "two thousand million Hiroshima size bombs." The subsequent environmental calamity, Keys believes, affected human civilization from Mongolia to Constantinople, precipitating plague, famine, death, great migration, the fall of the great Mexican city of Teotihuacan, the Anglo-Saxon victory over the Celts and perhaps even the rise of Islam. (UK / PBS) Released to video (VHS) as a single episode. Run time 1:50.

Why did Greenland's Vikings disappear? The Vikings of Greenland left no clues to their sudden and mysterious disappearance. Or did they? On a desolate coast of Greenland, an international team of archaeologists, forensic anthropologists, entomologists and botanists sets out to investigate clues in a complex chain of events that may have led to the demise of a Viking colony. Unearthing the ruins of a settlement that included a cathedral complete with stained glass, the scientists carefully identify and date the vestiges of the Viking society. Among their discoveries are a "mini Ice Age," a war with neighboring Inuits, and a religious order that may have doomed the Vikings to obsolescence. (UK/PBS 55 min)

Why did the great airship Hindenburg explode? The disintegration of the Hindenburg in 1937 is one of the most famous disasters of the 20th century. It took more than 100 years to develop what was, in its day, the fastest, most technologically advanced and most luxurious form of transportation in the world -- and 34 seconds to destroy it. The accident that ended the golden age of airships is generally attributed to the ignition of hydrogen gas used for lift. Addison Bain, a retired NASA scientist and hydrogen specialist, sets out on a personal quest of theorizing and experimentation to prove the Hindenburg's real flaw was only skin deep. (UK/PBS 55 min)

What happened to the peaceful ancient Pueblo civilization of the American southwest? For 1000 years, the Anasazi -- a democratic people with rich achievements in architecture, agriculture, astronomy and art -- flourished in what is now New Mexico. Yet around 1200 A.D., something brought their utopia to a sudden and mysterious end. Paleo-anthroplogist Christy Turner has found what he believes are clear signs of cannibalism among the Anasazi ruins, but American Indian groups and other archaeologists are skeptical. And while the evidence is difficult to refute, the meaning of the findings is still open to debate. In the shadow of a debate both scientific and political, question remain: Did the Anasazi culture become cannibalistic, or did cannibals from afar stumble across the perfect victims? (UK/PBS 55 min)

(Disease & Disaster) “The Witches Curse” poses a shocking new idea about the violent convulsions, delirium, and strange skin sensations that struck a group of young girls in 17th-century Massachusetts and inspired the infamous Salem Witch Trials. In 1692, 19 of the town’s residents were put to death because they were believed to have been witches. For hundreds of years, this tragedy was blamed on religious fanaticism, adolescent cruelty, and contagious hysteria. But these explanations failed to satisfy a “detective” who embarked on her own fact-finding mission. Was Salem’s Puritan community unwittingly living on bread infected by the fungus from which LSD is derived? Could toxic amounts of this fungus, known as ergot, be the real reason the accusatory teens endured psychotic episodes and saw blood dripping down their walls at night? And what clues could the 2,300-year-old corpse of a Danish murder victim possibly hold for Salem investigators? Tracking down historic outbreaks of ergot poisoning, Dr. Caporael compares its symptoms to those that plagued the girls in Salem, revealing a whole new side of this unsettling period. (UK/PBS 55 min)

A mysterious skeleton buried in a shallow grave beneath a famous ancient monument. Who was he? How long had he been there? And why had his head been severed from its body? Archaeologist Mike Pitts works with scientists, forensics experts and historian to dig up ominous information about early Britain and the circumstances that surrounded the man's death. Was he a cattle thief, an insurgent, or a pagan sacrifice in a newly Christian world? (UK/PBS 55 min)

The settlers at Jamestown, the first British colony in the New World, were looking for wealth and adventure. But within six months 80 of the original 100 arrivals were dead; 440 of the first 500 died within three years. Death came in sudden, brutal waves marked by severe bruising, weakness, wasting and madness. Did the men die of disease and starvation? Or is it more than a coincidence that the deadly outbreaks always seemed to strike just after the supply ships set sail? Clues from Europe and the recently rediscovered Jamestown site have led pathologist Frank Hancock to a radical new theory that implicates some unlikely suspects. (UK/PBS 55 min)

During the Anglo-Zulu wars in South Africa, the success of small British regiments against huge numbers of native warriors became the stuff of legend. But in one key 1879 battle, Zulu fighting unites known as Impis decimated the British forces at the battle of Isandlwana. Historian Ian Knight and forensic archaeologist Tony Pollard investigate the battle scene, trying to assess the impact of a solar eclipse on the outcome, and discovering the Zulu use of performance enhancing "battle drugs" that included cannabis and a powerful hallucinogenic mushroom. New evidence reveals the changing tide of the battle, the innovative strategy of the Zulu and one Critical, irreversible British mistake. (UK/PBS 55 min)

For centuries, visitors to the Church of the Holy Seplulchre in Jerusalem believed that they stood within what was merely a symbolic representation of Jesus' burial place. But what if the edicule within the church, an ancient crumbling structure, really does house Christ's actual tomb? Oxford archaeologists Martin and Birthe Biddle reconstruct Jesus' final day and trace the history of the various incarnations of the edicule -- looking for evidence that there is a tomb present, and trying to decipher whether or not Christ actually lay there. (UK/PBS 55 min)

In 1492, Christopher Columbus crossed the Atlantic in search of gold. But what his men carried back with them to Europe was something far less appealing. They brought the scourge of syphilis, a sexually transmitted disease never before seen in the Old World. At least that is what scientists have generally believed. But now, the discovery in Europe of a pre-Columbian body with definite signs of syphilis has archaeologist Charlotte Roberts convinced that syphilis existed in the Old World long before Columbus ever set sail. New evidence from across Europe is beginning to turn the prevailing Columbus theory on its head (UK/PBS 55 min)

The Battle of Towton in North Yorkshire, fought during the Wars of the Roses, was reputedly the bloodiest battle ever seen on English soil. In 1996 a mass grave of soldiers was discovered there by chance. This was the catalyst for a multi-disciplinary research project, still unique in Britain ten years after the initial discovery, which included a study of the skeletal remains, the battlefield landscape, the historical evidence and contemporary arms and armour. The discoveries were dramatic and moving; the individuals had clearly suffered traumatic deaths and subsequent research highlighted the often multiple wounds each individual had received before and, in some cases, after they had died. As well as the exciting forensic work the project also revealed much about medieval weaponry and fighting. Blood Red Roses contains all the information about this fascinating discovery, as well as discussing its wider historical, heritage and archaeological implications. (UK/PBS)

(Modern Mysteries) While remnants of the abandoned structure exist today, jungles have consumed much of what remains. Construction records and documents revealing the railway’s route are scarce. So just how did a team of men in such poor condition and confronted with so many obstacles manage to build the railway? And how did their Allied brethren achieve its demolition?

(Disease & Disaster) In 1918, a flu pandemic ripped through the global population with such speed and virulence that by the end of the following year an estimated 40 million people would be dead. Where did this come from and what made it so deadly? Virologists and epidemiologists the world over are still hunting down the answers.

In the summer of 2002, a team of textile restorers was invited to Turin to undertake an unprecedented renovation of the shroud, which called for the removal of the shroud's backing cloth and all of its medieval patches. The results were staggering -- brand new forensic evidence that the shroud is indeed 2,000 years old, dating from the time of Christ. Is it the authentic burial shroud of Jesus Christ, or just a brillian medieval fake?

In the three years leading up to D-Day, the Allies had assembled an array of weapons and transport vessels specially designed to overcome Hitler's defenses --  among them gliders, landing craft, minesweepers, and swimming tanks. This is the story of the maverick innovators who conceived of such an armory and its implementation into the largest amphibious invasion in the history of the world, and of the brave young men who woe;dd it so capably on the beach of Normandy. Runtime: 1:36.

(Archaeology) The myth of the Amazons, a tribe of bloodthirsty blond women thundering across arid battlefields to the horror of their male foes, has lingered for centuries. Their exploits seized the imagination of the Greek scribes Homer, Hippocrates, and Herodotus. But proof of their existence had always been lacking. Now, a 2,500-year-old mystery may have been solved, cracked by an American scientist whose ten-year odyssey led her tens of thousands of miles in pursuit of the truth. After unearthing evidence of a culture of ancient warrior women in the Russian steppes, Dr. Jeannine Davis-Kimball followed a trail of artifacts to a remote village in Western Mongolia, where her quest for a living link to a long-imagined tribe ended with a startling discovery. There, among the black-eyed Mongols, Davis-Kimball found a blond child, a 9-year-old girl named Meiramgul. Through DNA testing, Davis-Kimball finds that the DNA sequences of the warrior women and those from the girl of Mongolia are identical.

In the 1970s, female East German athletes came from nowhere to dominate international sport. But behind their success lay a horrifying secret. Doping for Gold reveals the truth behind the biggest state-sponsored doping program the world has ever known, creating a timely perspective on today’s many sports drug scandals.

Five thousand years ago the Minoans, Europe’s first great civilization, flourished on the island of Crete. Yet in their heyday, they mysteriously disappeared. Sinking Atlantis digs deep into the Minoan soil and history, following archaeologists who are finding evidence of a massive tsunami that devastated the Minoans – and may have spawned the myth of Atlantis.

In 1910, an American doctor named Hawley Crippen was convicted in England of poisoning and dismembering his wife. The vicious murder—and execution that followed—made international headlines. It was a landmark case: The first trial by media, and the first to be dominated by forensic science. But did the prosecutors get it right? Almost one hundred years later, investigators have re-opened the files on a murder that became known as one of the crimes of the century.

Edward Teach, alias Blackbeard, was the most notorious pirate of his day. At the height of his rein, he commanded a fleet of four ships and a crew of 400 men. They were ruthless seafaring raiders who terrorizing vessels in American waters. In 1718, Blackbeard even blockaded the city of Charleston, crippling its economy. Eventually he was caught and beheaded by a posse from the Royal Navy. Now, 300 years later, a marine archaeology team believe they have found his sunken flagship, Queen Anne’s Revenge, off the North Carolina coast.

More than five centuries ago, Michelangelo Buonarroti was the darling of the Catholic Church. The Papacy commissioned him to create many of its most important pieces, including the frescoes of the Sistine Chapel. He spent his life glorifying the Church, etching Catholic ideals into masterpieces that defined religion for the masses. Yet when he died, his body was secretly shepherded off to Florence, and the Church was denied the opportunity to honor him with a grand funeral in Rome. Historians have long wondered about the mysterious circumstances surrounding his death, but now, art historian Antonio Forcellino believes he has pieced together evidence of a deep rift between the Church and the esteemed artist. The cause: Michelangelo’s belief in Protestant ideals, and his involvement with a clandestine fellowship trying to put an end to the decadence and corruption of the Clergy and reform the Church from within.

A tribe in Borneo protects a shot-down U.S. bomber crew from Japanese occupiers during World War II. The local missionaries, who converted the tribe to Christianity, were executed by the Japanese invaders, who had forced out Dutch and British colonialists, while massacring Borneo natives. A surviving missionary from Indonesia, employed by the Japanese military as an area administrator, outwits Japanese forces by hiding the U.S. airmen deep in a jungle canyon. The local Dayak people risk their lives, and force the occupiers to abandon their hunt for the airmen, using blowpipes and machetes against the Japanese army search parties.

Accounts of the survivors of the indiscriminate terrorist massacres in Mumbai by Islamic Extremests in November 2008 and how the news media aided the terrorist by giving away the hiding places of the soon to be victims.

During World War 2, Japan developed a super-submarine capable of launching bomber aircraft as a strategic weapon to carry the conflict to the United States mainland. But in the rapidly changing Pacific Theater, one intended mission after another becomes obsolete before the submarines can be deployed