As the clocks go forward this spring, see if you can solve these puzzles based on ancient calendars. When the clocks change for Daylight Saving Time, it can often involve a bit more mental ...

Time isn’t a clock, but a river. It doesn’t reset when the day is done, but flows constantly forward. You can either stand in ...

Instead, he only needed to look at history. “[‘Ingenious Clocks’ is composed] in a fairy tale vein, although actually it's based on a real person rather than a fictional story,” Al-Zand said.