The modern Greek alphabet is missing some of the letters used in ancient times. What are these missing letters, and what happened to them?

The Greek alphabet has only been used twice in the 70 years since hurricanes were given names, but it was retired forever this week after the World Meteorological Organization said it was too ...

The Greek alphabet, traditionally believed to have emerged in the eighth century BC, is now undergoing reevaluation thanks to groundbreaking research at Leiden University. The writing system is ...

In Monday's puzzle, 27-Across read [Greek letter X], which was either a gimme or a "Now, which one is that again..?" for most solvers. CHI it was, but it is tough to keep track sometimes. Four of the ...