The 13-year civil war in Syria has roared back into prominence with a surprise rebel offensive on one of Syria’s largest cities and ancient business hub. The rebel advances in Aleppo are among the ...

The Mayan calendar’s 819-day cycle has confounded scholars for decades, but new research shows how it matches up to planetary ...

Since the beginning of our existence, humans have had an innate desire to keep time and records of events. Having a ...