When faced with something new, human beings instinctively reach for comparisons. A child learning about atoms might hear that electrons orbit the nucleus “like planets orbit the sun.” An entrepreneur ...

Images of plants painted on pottery made up to 8,000 years ago may be the earliest example of humans’ mathematical thought, a study has found.

As an academic discipline, logic is the study of reasoning. Logic puzzles, therefore, involve solving problems by making a ...

The longtime government contractor whose activity prompted the controversial search of a Washington Post reporter’s home ...