This could be achieved by finding which one is right and which one is wrong, by finding that both string theory and loop quantum gravity are wrong and a third theory is right, or by finding that the two theories can be unified.

ECONOMIST: A new ��theory of everything�� is gaining ground

In particle physics, sound-bite explanations are much harder: wave-particle duality, quantum mechanics, general relativity and string theory make good mathematical sense, or so I am told, but they generally defy translation into English.

WSJ: Matt Ridley on the Higgs Boson | Mind & Matter

Extra dimensions are of interest because string theory, a class of mathematical models based on quantum theory that seeks to describe reality in the most fundamental way, requires that there be at least six of them, maybe more.

ECONOMIST: Cosmology