These days, we would call them proprietary blends. But in the late 1500s and early 1600s, individual alchemists called the ...

David Musgrove reports on new research that casts light on the appearance of the comet in the 11th century, and its depiction in the Bayeux Tapestry ...

For five short December days each year, sunlight pierces the heart of Newgrange, a 5,200-year-old tomb whose perfect ...

The first full moon of the calendar year is January's wolf moon. Its name derives from the idea that wolves could be ...

Prologue I learned a few things about Plato in high school and in my university classes on ancient and medieval Greek history. I improved that meager ...

If you feel a thrill every time we discover something new about the cosmos, then November 25th may have been a noteworthy day ...

Dürer's 1515 star charts were a game-changer for European courts, proving an obsession with astrology is nothing new ...

Archaeologists have uncovered the submerged ruins of a medieval Silk Road city beneath Lake Issyk-Kul. Located in ...

Nearby what was thought to be the oldest known astrological observatory in the Western Hemisphere, archaeologists discovered one even older. The site in the Casma Valley of Peru could be centuries ...

Life in many medieval towns revolved around constructing a cathedral, a massive undertaking that took generations of work by everyone from artists and architects to prisoners of war. Work in ...