Whether standing stones, nondescript mounds, or lines in the earth, ancient civilizations have left signs of their existence that must have held deep meaning for them that is now lost to time.

Antarctica has long been a land of mystery, with its icy expanse concealing numerous secrets. From James Cook's early explorations, which led to theories of a flat Earth, to modern-day discoveries, ...

From desert carvings to underwater ruins, these ancient structures are so advanced that experts still can’t agree on what they were meant to do. View Entire Post › ...

Long before the Inka (commonly known as Inca in English) rose to power, a mysterious civilization bloomed on the edge of Lake Titicaca. Known as Tiwanaku, it began as a humble farming village in the ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." An estimated 90 percent of human Amazonian history is lost within the jungle itself. A new discovery has ...

Indiana Jones wannabes, your time has come. A local government in India is offering a $1 million prize to the first person who cracks the code of an ancient script found in the ruins of one of the ...

The absence of modern-day calculators did not stop ancient cultures from performing extraordinary feats of mathematics. The ancient Greeks kept count with abaci, frames with rods or grooves for moving ...

They fought the Egyptians, sacked Babylon, and built elaborate cities. Then the Hittites vanished. Today, new discoveries are restoring the legend of a forgotten superpower. A procession of gods ...

A former senior U.S. Marine Corps officer who once planned battles during Operation Desert Fox in 1998 will discuss why military matters are kept such a deep, dark secret, on Wednesday, Sept. 25, at ...