Amateur astronomers gazing at Mars discovered gigantic plumes soaring more than 125 miles above the planet’s surface, a phenomenon that so far defies explanation.
Climbers in Chile's Andes say they have found the wreckage of a missing plane that disappeared more than half a century ago.
A farmer in Chile has found two mummified animals and claims they may be the remains of the mythical chupacabra.
A boy who wrote a best-selling book about visiting heaven has admitted the story is false. Here's why it was widely believed.
The weird fingerlike thing wasn’t from a bear or other wild mammal, but it also wasn’t human.
Obsidian tools tell a different story than the theory that the Rapa Nui civilization collapsed all at once amid mass starvation.
DNews recognizes Gillespie for the decades he has spent investigating one of the 20th century's most enduring mysteries: the fate of Amelia Earhart.
As we head into 2015, look back at some of the strangest mysteries of this past year and some of the mysteries that remain.
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