Among his many high-profile roles, Franklin still managed to keep some affairs out of the public eye.

He’s famous for being a Founding Father and a groundbreaking inventor. But behind his electric experiments, Benjamin Franklin kept dark secrets not taught in the history books.

Twenty years after NASA landed the first rover on Mars, theorists believe there’s more to the Red Planet than reported.

From the ancient Egyptians to 16th-century scientists to NASA today — fascination with the Red Planet spans thousands of years. But Mars holds endless mysteries. How close are we to finding them out?

Centuries after his death, Nostradamus is still a household name, but his accuracy, methods, and reputation are all up for debate.

The deaths of kings. The makings of popes. Famines of entire civilizations. Nostradamus became famous in the 16th century for his predictions of the future.

After the mysterious death of his father in 1993, Michael Jordan retired unexpectedly.

Was the 1985 NBA draft lottery rigged? Facing disillusioned fans and dwindling TV viewers, NBA commissioner David Stern changed how the draft was done.

When do conspiracy theories stop being theories? Today’s episode visits real accounts of deadly misconduct committed at scale by governments and businesses.

Reptile overlords. Pizzagate. QAnon. What makes conspiracy theories so alluring, and why are some more unshakeable than others?

Even expert primatologists can’t agree on whether Bigfoot exists. Is it all a hoax, or is the creature more intelligent — or cosmic — than we give it credit for?

It’s the most-glimpsed creature that doesn’t exist. A mysterious ape-man whose legends date back centuries. But while the stories shift and morph, some elements remain the same: The giant footprints.

They say a Bonesman is for life… Their secret bond might have led to the creation of another clandestine organization: the CIA.

Formed at Yale in 1832, a fraternal secret society counts media moguls, CIA operatives, even U.S. presidents in its roster.

In April 2021, Bitcoin hit its all time high of over 60K per coin — and it's still growing.

An enigmatic creator. A much-hyped cryptocurrency. Bitcoin might be paving the way for a financial revolution, but critics say the digital dollar is a perfect cloak for criminals and cybercrimes.

RFID tags have become a paper-thin, barely detectable building block of our economy — but they aren’t without controversy.

A spy device developed during the Cold War has evolved into ubiquity, used for everything from tracking cow medications to locating nuclear materials.

After boarding a plane to visit her estranged husband in 1986, Marcela Basteri disappeared. Her whereabouts are still a mystery.

As one of Mexico’s biggest pop stars, Juan Gabriel’s talent and rags-to-riches story were legendary. But despite his fame, he was able to keep an astonishing number of secrets — ones that resulted in speculation over his life and death, and a fight over his vast estate.

To this day, no one knows what made Berenger Saunier so incredibly wealthy. Some believe he uncovered ancient treasure from the Knights Templar. Others claim he held secrets about Jesus Christ.

Every year, thousands of people flock to a tiny French village to solve an ancient mystery.

Is the threat posed by global warming as imminent as it seems? Is it possible that corporations are manipulating data (and exploiting our fears) to make an extra buck? And how likely is it that humans aren’t to blame after all?

Over the last century, the fossil fuel industry has exploded. Carbon emissions are at an all time high. Wildfires and hurricanes are on the rise.

The world looked on in shock when an assassin shot Pope John Paul II in May 1981.