If, of late, you haven’t heard of or read about the Jevons Paradox, you likely will. Named after 19th-century British economist William Stanley Jevons who observed in his 1865 book The Coal Question, ...

Researchers say that if you're worried about paradoxes in time travel, you shouldn't be. Based on a lot of complex math, the team says they've determined that paradoxes related to time travel would be ...

We are always solving problems, some of which have instantly obvious solutions and others that do not. In the latter case, the word puzzle comes to mind instead. A problem can be defined therefore as ...