Hundreds of Washington’s elite fell violently ill at the same hotel in 1857, including President-Elect James Buchanan.

The forger confused his gothic letters, used post-war glue, and aged the covers with tea. The real mystery is why anyone believed him at all.

Life-forms made of stuff we couldn’t imagine may still be as conscious as we are.

The world’s once-tallest building absorbed the deadly accident 14 years after construction.

Some mind-altering substances can leave lasting marks on entire cultures that ripple far beyond a single trip.

The buried structure may be an entrance to something deeper beneath the desert floor.

While its mouth is closed, this artifact speaks volumes about the medieval past.

The ring, made in part from deep-blue stone, was likely owned by a high-status woman during the Middle Ages.

Atomic clocks leveraged the atom to keep time, but new innovations will use the nucleus itself. 

Discovered in 1908, the disc is covered in undecipherable symbols that have perplexed experts and led to numerous theories about its origins.

Elmo W. Heter had a problem: beavers were dying during overland relocations. His solution? Custom crates, surplus parachutes, and a very patient test beaver.