Let’s say that freshly harvested cucumbers can have a water content of up to 99 percent. (Never mind that the U.S. Department ...

Today’s optical illusion challenges you to find the hidden "28" among a grid of "23s." It’s a fun way to test your focus and attention to detail while giving your brain a quick workout.

As an academic discipline, logic is the study of reasoning. Logic puzzles, therefore, involve making a series of inferences and assessing them using reasoning. Easier logic puzzles for kids tend to ...

The creators of a new test called “Humanity’s Last Exam” argue we may soon lose the ability to create tests hard enough for A ...