Researchers designed a way to open ancient letters without ever breaking their seal using X-ray technology.

Practice of intricately folding letters to secure them is known as "letterlocking."

As the U.S. Treasury considers putting Harriet Tubman on the $20 bill to honor her role in the northbound underground railroad, new attention is being paid to the often overlooked southbound route.

The well-preserved chariot, complete with decorative medallions depicting erotic scenes, is an "extraordinary discovery" that may have been used in wedding ceremonies.

Warfare before computers: A German U-boat from 1915.

During the Korean War, the United States inflicted unimaginable horrors on the Korean people. Yet today Americans know almost nothing about their government's role in war crimes and atrocities.

A campaign by Quebec separatists culminated in two kidnappings, a killing and the suspension of civil liberties

The CIA tried to fight communism by dosing unwitting soldiers and prisoners with acid. ON APRIL 10, 1953, ALLEN DULLES, THE NEWLY APPOINTED DIRECTOR OF THE CIA, delivered a speech to a gathering of Princeton alumni. Though the event was mundane, global tensions were running high. The Korean War was coming to an end, and earlier that week, The New York Times had published a startling story asserting that American POWs returning from the country may have been “converted” by “Communist brain-washers.”

The move draws sharp criticism from tribal legislators who say the court exceeded its authority by changing the constitution itself without a vote of the Cherokee people.

After the Civil War, Henrietta Wood made history by pursuing an audacious lawsuit against the man who’d kidnapped her back into slavery. Yet the story was lost to her own family.

At the turn of the 20th Century, Thomas Edison invented a battery with the unusual quirk of producing hydrogen. Now, 120 years later, the battery is coming into its own.

A new book, about the suburban women who poisoned their husbands in post-war Sydney, explores their cold-blooded modus operandi and the hot dinners they prepared.

Efforts are being made to put up a plaque commemorating Violet Gibson in Dublin.

James Bond? Inspector Gadget? Yup, all here

The technique implies covering the inside of the conical bread moulds with a layer of fine sandy clay, heating the moulds up horizontally and shaping the dough in advance into elongated pieces.

These glass beads traveled from Italy to Alaska decades before Columbus “discovered” America.

A high-production brewery believed to be more than 5,000 years old has been uncovered by a team of archaeologists at a funerary site in southern Egypt, the tourism ministry said Saturday.

Study of ancient Africans suggests dairy consumption predated evolution of lactase persistence genes

Project Star Gate operated between 1972 and 1995 and attempted to offer, in the words of one congressman, "a hell of a cheap radar system."