Are there monsters in our midst? Creatures who lurk in dense forests or fly over our largest cities? For centuries, monsters like Mothman, the Thunderbird, and Bigfoot have mystified witnesses, skeptics, and scientists alike. So, what can we learn from encounters reported around the globe with beasts we don’t yet understand?

Are there monsters in our midst? Creatures who lurk in dense forests or fly over our largest cities? For centuries, monsters like Mothman, the Thunderbird, and Bigfoot have mystified witnesses, skeptics, and scientists alike. So, what can we learn from encounters reported around the globe with beasts we don’t yet understand?

Humanity has long been fascinated with the galactic worlds beyond our planet. What mysteries are yet to be solved about the surface of the Moon? And what would happen to Earth if our lunar neighbor disappear? Do the impact craters and massive scar on Mars reveal a cataclysmic history on the barren Red Planet?

Humanity has long been fascinated with the galactic worlds beyond our planet. What mysteries are yet to be solved about the surface of the Moon? And what would happen to Earth if our lunar neighbor disappear? Do the impact craters and massive scar on Mars reveal a cataclysmic history on the barren Red Planet?

From the very founding of the United States, there have been many bizarre and unsolved mysteries that continue to capture our imagination. Did a divine encounter between George Washington and an angel influence a great victory in the American Revolution? What was the strange, green glow that seemed to heal wounded soldiers during the Civil War? And could America's most notorious assassin have led a double life... after death?

From the very founding of the United States, there have been many bizarre and unsolved mysteries that continue to capture our imagination. Did a divine encounter between George Washington and an angel influence a great victory in the American Revolution? What was the strange, green glow that seemed to heal wounded soldiers during the Civil War? And could America's most notorious assassin have led a double life... after death?

What makes the criminal mind tick? From elusive imposters disguised as foreign doctors or socialites, to dangerous killers... What drives certain people to deceive and execute outrageous and daring plots? And can we learn how some elaborate crimes, like the confounding murders of San Francisco’s Zodiac Killer or an ingenious escape from Alcatraz, were set into motion and ultimately pulled off?

What makes the criminal mind tick? From elusive imposters disguised as foreign doctors or socialites, to dangerous killers... What drives certain people to deceive and execute outrageous and daring plots? And can we learn how some elaborate crimes, like the confounding murders of San Francisco’s Zodiac Killer or an ingenious escape from Alcatraz, were set into motion and ultimately pulled off?

Uncovering ruins from the past has been integral to our understanding of ancient civilizations. But sometimes, what remains of these cultures raise more questions than answers. For instance, why did once great empires such as the Maya or the thriving Khmer people at Angkor Wat suddenly vanish? And what secrets lie preserved under the ashes of the Roman city of Pompeii?

Uncovering ruins from the past has been integral to our understanding of ancient civilizations. But sometimes, what remains of these cultures raise more questions than answers. For instance, why did once great empires such as the Maya or the thriving Khmer people at Angkor Wat suddenly vanish? And what secrets lie preserved under the ashes of the Roman city of Pompeii?

Throughout history, geniuses have had a profound impact on societies all over the world. From science, to music, to mathematics, their achievements have shaped the evolution of human civilization. But how does a person become a genius? Is it something they are born with? Or is it something that can be learned? And can more clues about geniuses be found by examining the brains of extraordinary thinkers... like Albert Einstein?

Throughout history, geniuses have had a profound impact on societies all over the world. From science, to music, to mathematics, their achievements have shaped the evolution of human civilization. But how does a person become a genius? Is it something they are born with? Or is it something that can be learned? And can more clues about geniuses be found by examining the brains of extraordinary thinkers... like Albert Einstein?

Throughout human history, cultures all over the world have produced unforgettable legends that have inspired people for centuries. Is it possible that ancient stories we consider to be fictional - legends, myths, and folklore - are actually fragments of a larger historical record that's been lost? Do some mythical stories have a basis in reality? And if so, which parts of the stories are fact and which are fiction?

Throughout human history, cultures all over the world have produced unforgettable legends that have inspired people for centuries. Is it possible that ancient stories we consider to be fictional - legends, myths, and folklore - are actually fragments of a larger historical record that's been lost? Do some mythical stories have a basis in reality? And if so, which parts of the stories are fact and which are fiction?

Most disappearances can be explained by either foul play or bad luck. However, there are some cases that defy conventional wisdom. How can a modern jetliner simply drop off radar screens?

Most disappearances can be explained by either foul play or bad luck. However, there are some cases that defy conventional wisdom. How can a modern jetliner simply drop off radar screens?