Many of us like to think that we’re fairly smart. But it can be a very humbling experience when you’re in the presence of ...

Do you think you've got decent science knowledge? It's time to put your gray matter to the test with our weekly, free science crossword puzzle. We've spent hours carefully writing our puzzles to make ...

The idea that reality might be a kind of cosmic software has moved from late night dorm debates into serious physics journals ...

Time yourself for an extra challenge. Turn on the timer in settings and race to solve today’s puzzle.