Explore the world's oldest calendars and uncover how ancient civilizations precisely tracked time, seasons, and celestial ...

Mankind invented calendars to keep track of time. The ancient Chinese calendar is probably among the most complicated calendar systems there are. It remains a mystery even to many Chinese people.

Long before clocks or written calendars existed, ancient farming communities faced a life-or-death problem; they needed to know when seasons would shift. The solution came from above. Civilizations ...

It had long been thought that the famous site of Stonehenge served as an ancient calendar, given its alignment with the solstices. Now, research has identified how it may have worked. New finds about ...

Stonehenge may have served as a calendar to keep track of the yearly movements of the sun, suggesting a prehistoric link to sun worship in the eastern Mediterranean, according to new research. A study ...

Add Yahoo as a preferred source to see more of our stories on Google. An aerial photo of Stonehenge at sunrise. Stonehenge wasn't a prehistoric solar calendar but served mainly as a memorial to the ...

A new study explains how the ancient solar calendar may have worked at Stonehenge — and why it was constructed in the first place. Stonehenge has always been shrouded in mystery. The ancient monument ...

Markings on a stone pillar at a 12,000-year-old archaeological site in Turkey likely represent the world's oldest solar calendar, created as a memorial to a devastating comet strike, experts suggest.

Scientists have deciphered broken fragments of one of the Dead Sea Scrolls, ancient manuscripts with biblical writings and other texts. Above, one of the scrolls. Uriel Sinai/Getty Researchers solved ...

Stonehenge may have served as a calendar to keep track of the yearly movements of the sun, suggesting a prehistoric link to sun worship in the eastern Mediterranean, according to new research. A study ...