Greene offers up a garden hose as a good example of what the fourth dimension looks like. From far away, this garden hose may ...

Black holes, the densest objects in the universe, eat up anything that comes too close, even light. Is there anything left inside these behemoths that could reveal what they devoured in the first ...

Scientists have long sought evidence to refute string theory, but a new test seeks to disprove key aspects with help from the Large Hadron Collider.

String theory aims to explain all fundamental forces and particles in the universe—essentially, how the world operates on the ...