The History Channel

Scientists are continually challenged by unidentified strains of bacteria with mysterious origins. Could some of our most crippling plagues and epidemics be traced to the darkest voids of space--or even extraterrestrial intervention? During the Black Death of the Middle Ages, people reported bronze flying ships emitting a strange mist. As recently as 2011, NASA scientist Richard Hoover published evidence of life in meteorites. Is it possible that ancient aliens--as small as microbes--have shaped human history?

The Hopi people have warned us that the world is headed for extinction. Based in the Arizona Desert, the Native American tribe of the Hopi has been prophesying about the fate of society for centuries. They have accurately predicted the coming of the settlers to their land, the birth of telecommunication, and the worldwide spread of the internet. The Hopi believe that our actions have caused the earth to become out of balance which will lead to a cataclysmic great purification of the planet that few will survive. To herald these end times, the Hopi believe that a blue star will arise in the heavens, followed by a great shaking of the earth. These prophecies have been passed down from generation to generation and warn of massive earthquakes, tsunamis and super-volcanos that threaten the lives of millions. The Foster family of Illinois is prepping in their own way to be ready for the end.

There are numerous historical, religious and mythic accounts of ancient civilizations being wiped out by volcanoes, earthquakes, floods, and meteors. Did god, or nature bring about such disasters? Or is it possible that celestial beings had a hand in the ancient world's catastrophic disasters?

For years, the team has been tracking an elusive prey only seen at night--ships, shaped like triangles, impossibly huge, and videotaped over cities around the world. But are they ours, or theirs? The team investigates numerous UFO sightings that have recently been reported in Sonora, California, a charming old West town nestled in the Sierra Nevada Mountain Range nicknamed Triangle Alley. What makes these sightings so compelling are rare daytime footage of triangles in flight. This footage will be digitally analyzed to determine if these are indeed UFOs and not military jets. The team will also visit Texas to speak to military experts and witnesses to compelling triangle sightings. It's speculated that these triangle craft have been visiting us for centuries.

The team is hot on the trail of a case that just happened, one that had the whole country talking just weeks ago. In December 2007, people begin seeing UFOs in the skies ninety miles from Dallas, Texas. Within a month, the reports had increased ten-fold. The UFO Hunters travel to Stephenville, Texas to investigate the strange lights in the sky. They meet witnesses never interviewed for TV, analyze strange footage shot by people all over Texas, and come to an incredible conclusion.

They are described by hundreds of witnesses as grey-skinned beings: no ears, no nose and bulbous black eyes. Are these so called "Greys" visitors from another planet? The team investigates stories of abductions in two different countries--their harrowing accounts disturbingly similar. In hypnotic regression, eyewitnesses describe being taken aboard alien spacecraft as part of a bizarre program to form "hybrid" beings. The team tracks down potential proof: an unusual, one-of-a-kind skull discovered in a cave in Mexico that bears an eerie resemblance to the Greys described by abductees.

The Hopi people have warned us that the world is headed for extinction. Based in the Arizona Desert, the Native American tribe of the Hopi has been prophesying about the fate of society for centuries. They have accurately predicted the coming of the settlers to their land, the birth of telecommunication, and the worldwide spread of the internet. The Hopi believe that our actions have caused the earth to become out of balance which will lead to a cataclysmic great purification of the planet that few will survive. To herald these end times, the Hopi believe that a blue star will arise in the heavens, followed by a great shaking of the earth. These prophecies have been passed down from generation to generation and warn of massive earthquakes, tsunamis and super-volcanos that threaten the lives of millions. The Foster family of Illinois is prepping in their own way to be ready for the end.

Biblical texts and ancient lore frequently describe winged creatures carrying messages from the heavens. But are angels merely the product of mankind's imagination--or do they really exist? If so, where do they come from? Ancient astronaut theorists suggest that the Bible's Old Testament reads like a handbook on extraterrestrial visitations. Accounts of angels can also be found in Islamic and Indian texts. Infinite stories around the globe describe unearthly guardians, entrusted to both observe and protect as well as tales of powerful warriors bringing about everything from plague to peace. Are angels really supernatural beings from heaven, or something more? If so, might angels really be travelers--visiting Earth from distant planets?

If ancient aliens visited Earth in the remote past, could they have given us advanced technology, past down through human history? And could this technology have helped the Third Reich build mysterious weapons and crafts far beyond the limits of 20th century science? During World War II, there were reports that the Germans built an operational flying saucer, known as the Hanebu, which was said to use mythical technology found in ancient Indian texts. Another craft was rumored to have been constructed with the help of psychics and mediums who claimed to have received detailed blueprints from extraterrestrial beings. Is it possible Hitler's quest for world domination was aided and abetted by ancient extraterrestrial technology that was rediscovered? And could the allegedly rebuilt alien devices developed in Germany have played a role in America's ability to land a man on the moon?

What if I told you that for two thousand years, many of the world's most powerful men have pursued an ancient artifact they believed would bring them unparalleled power? It's the lance that allegedly pierced Jesus' side while he was nailed to the cross. Known as the Spear of Destiny, it passed through the hands of leaders like Napoleon and Adolf Hitler, and today there are a number of shadowy institutions around the world that are still chasing the Spear. Yet the question remains: does the Spear really exist, or has it been lost forever? Decoded pursues the truth about the Spear across two continents, and tries to solve this centuries-old mystery.

Government authorities say it's "not if... but when"...a moment in the future when, just as it has in the past, some catastrophe sparks mass destruction, leaving humans challenged to find shelter, heat, food, water and defense. If that happens, would you know what to do? Survival expert Rudy Reyes journeys through abandoned buildings showing us some surprising survival techniques, including making fire from steel wool, finding safe houses and creating shortwave radio transmissions.

Is it possible to achieve eternal life? Some believe the first children who will live to the age of 1,000 have already been born. To find out how close humanity is to defeating death, we'll investigate plans to grow replacement body parts in labs, microscopic robots that could wipe out deadly diseases, and the possibility that aging itself can be reversed by taking a page out of one of history's darkest legends.

Informational programming.

Informational programming.

Informational programming.

Informational programming.

Located on a rocky plateau overlooking the Dead Sea, the now-ruined fortress of Masada once had walls 1400m long and 4m thick, storehouses, barracks, an armory, a palace and massive cisterns filled with rainwater. Designed to withstand any invader, it became the scene of one of history's most bloody sieges... a siege that ended in mass suicide.

For years, the team has been tracking an elusive prey only seen at night--ships, shaped like triangles, impossibly huge, and videotaped over cities around the world. But are they ours, or theirs? The team investigates numerous UFO sightings that have recently been reported in Sonora, California, a charming old West town nestled in the Sierra Nevada Mountain Range nicknamed Triangle Alley. What makes these sightings so compelling are rare daytime footage of triangles in flight. This footage will be digitally analyzed to determine if these are indeed UFOs and not military jets. The team will also visit Texas to speak to military experts and witnesses to compelling triangle sightings. It's speculated that these triangle craft have been visiting us for centuries.

The team is hot on the trail of a case that just happened, one that had the whole country talking just weeks ago. In December 2007, people begin seeing UFOs in the skies ninety miles from Dallas, Texas. Within a month, the reports had increased ten-fold. The UFO Hunters travel to Stephenville, Texas to investigate the strange lights in the sky. They meet witnesses never interviewed for TV, analyze strange footage shot by people all over Texas, and come to an incredible conclusion.

They are described by hundreds of witnesses as grey-skinned beings: no ears, no nose and bulbous black eyes. Are these so called "Greys" visitors from another planet? The team investigates stories of abductions in two different countries--their harrowing accounts disturbingly similar. In hypnotic regression, eyewitnesses describe being taken aboard alien spacecraft as part of a bizarre program to form "hybrid" beings. The team tracks down potential proof: an unusual, one-of-a-kind skull discovered in a cave in Mexico that bears an eerie resemblance to the Greys described by abductees.

The Hopi people have warned us that the world is headed for extinction. Based in the Arizona Desert, the Native American tribe of the Hopi has been prophesying about the fate of society for centuries. They have accurately predicted the coming of the settlers to their land, the birth of telecommunication, and the worldwide spread of the internet. The Hopi believe that our actions have caused the earth to become out of balance which will lead to a cataclysmic great purification of the planet that few will survive. To herald these end times, the Hopi believe that a blue star will arise in the heavens, followed by a great shaking of the earth. These prophecies have been passed down from generation to generation and warn of massive earthquakes, tsunamis and super-volcanos that threaten the lives of millions. The Foster family of Illinois is prepping in their own way to be ready for the end.

Biblical texts and ancient lore frequently describe winged creatures carrying messages from the heavens. But are angels merely the product of mankind's imagination--or do they really exist? If so, where do they come from? Ancient astronaut theorists suggest that the Bible's Old Testament reads like a handbook on extraterrestrial visitations. Accounts of angels can also be found in Islamic and Indian texts. Infinite stories around the globe describe unearthly guardians, entrusted to both observe and protect as well as tales of powerful warriors bringing about everything from plague to peace. Are angels really supernatural beings from heaven, or something more? If so, might angels really be travelers--visiting Earth from distant planets?