Throughout the history of the world, there have been many cases of what is known as collective hysteria - groups of people, usually young women, who all exhibit the same physical symptoms of non-existent conditions. Is it psychosomatic? Is it group think?

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The Philadelphia Experiment is a bad movie from the 1980s, and also the conspiracy theory that refuses to die, despite virtually zero evidence of its occurrence. Learn all about this strange non-event in today's show.

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Mermaids aren't real. That much we know. But the history and lore of these magical and sometimes menacing creatures of the sea is pretty interesting stuff. Learn all about these half women/half fish today.

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In 1960 physicist Freeman Dyson suggested that in the hunt for alien life, we should search for evidence of massive engineering projects that encapsulate stars with solar arrays to harness their energy. Could we humans ever make one ourselves?

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When the Mary Celeste was discovered floating and abandoned in the middle of the Atlantic Ocean one day in 1872, the legend of the ghost ship was born. Why did the Mary Celeste’s crew disappear? Was it pirates? Mutiny? UFOs? Well, probably not that last one.

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In 1987, a very strange broadcast intrusion occurred in the city of Chicago. For just a couple of minutes, the odd TV character Max Headroom appeared onscreen in the middle of an episode of Dr. Who. He spoke in garbled tones, brandished a marital aid, and was spanked on the rear with a fly swatter by a person dressed in Annie Oakley garb. If this sounds weird, it is. It's the Max Headroom Incident.

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Dragons are like mermaids in that they're not real. And that's about where the comparison ends. Learn all about dragons today.

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The Hotel Cecil in downtown Los Angeles has had no less than 16 unnatural deaths, from suicides to murders and everything in between. Listen in to the history of this decidedly creepy hotel.

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