From ancient civilizations to 20th century empires, mankind has had an inexplicable fascination with preserving the dead. But why? Are we simply too attached to the living to let them go? Or could it be that death isn't really the end, but rather a transition to a new beginning?

On March 11th, 2020, the World Health Organization declared that the outbreak of the lethal Coronavirus had become a worldwide pandemic. We'll examine some of the most devastating plagues in human history, as well the scientific advances to combat these diseases, including the development of Edward Jenner's vaccine for smallpox in the 1790s. Jenner's vaccine was one of the first major breakthroughs in modern medicine and helped to end humanity's superstitious attitude towards disease. But in the future, might we face diseases that are different from the ones we've experienced in the past?

According to the Greek philosopher Plato, the lost continent of Atlantis was once home to an advanced civilization before it was destroyed in a cataclysm. But was Plato's story merely a myth? Or did Atlantis really exist? For centuries, archaeologists have tried to uncover evidence to prove that this legend is true. Will Atlantis finally be re-discovered, perhaps by employing modern technology? Or will this lost civilization remain...UnXplained?

For centuries, humanity has been compelled to build remarkable structures that are much more than simple places of shelter or work. What makes us want to create magnificent buildings that are bigger and grander than ourselves--and last for centuries? Whether it's Stonehenge, the Notre Dame Cathedral, or the world's tallest skyscrapers--extraordinary works of engineering are evidence of a strong instinct within us that we don't fully understand. Are we trying to prove something? Or perhaps show our power over nature? Or could there be another reason that is, for now...UnXplained?

Will we ever understand the motivations that drive people to undertake the most bizarre, intricate, and dangerous crimes -- or will the mind of a master criminal remain - UnXplained?

Mysterious disappearances are confounding and bizarre and simply can't be explained. Can these be chalked up to tragic accidents? Or could they be the result of something more...UnXplained?

For centuries, legends and eyewitness accounts have told of a massive, hairy creature that roams the forest on two legs. While science has yet to prove the existence of this mythical man-beast, countless researchers and experiencers around the world are convinced that there is a giant, ape-like animal hiding in remote parts of the world. They point to the discovery of large, inexplicable footprints as evidence of the so-called "Bigfoot" that they hope to prove is real. But does Bigfoot actually exist?

For centuries, humanity has looked up at the Moon with a sense of wonder. But is the Moon just a rock floating in space? Or could it hold profound secrets—and perhaps even possess incredible powers? That is what we will try and find out.