Here we are with the best science-themed tricky riddles (with answers) that will test your ability to think outside the box!

Three super spies are caught sending sensitive information to an enemy state. These three double agents are apprehended and taken out to a remote spot in the woods. They are told that one of them will ...

Welcome back to Popular Mechanics' Riddle of the Week series. This week's problem requires a bit more math than any of the riddles we have posted thus far, bumping its difficultly level up to hard. So ...