As new species are discovered around the world, others are disappearing without a trace. Amphibians are facing existential threats on a global scale, leading some researchers to believe they've ...

The Bermuda Triangle has long been a source of mystery and fear, with countless ships and planes disappearing without a trace. But one pilot lived to tell the tale. In this video, we share the ...

A Wisconsin mother who vanished over 60 years ago has been located “alive and well” — but she never wanted to be found in the first place. Audrey Backeberg was just 20 years old when she disappeared ...

SANTA FE, N.M. — It’s a mystery that’s puzzling kids at Santa Fe’s La Farge Library. Several weeks ago their beloved “Clifford the Big Red Dog” stuffed animal went missing, disappearing without a ...