As the clocks go forward this spring, see if you can solve these puzzles based on ancient calendars ... on GMT throughout the summer. In the ancient world, there were far more radical changes ...

The notion of the Seven Wonders of the Ancient World can be traced back to the fifth century B.C. These creations rivaled many created by nature in their size, majesty, and beauty. Six of the ...

Among them, some were picked, analyzed, and deemed to be the seven wonders of the world. These monuments are the ...