String theory is perhaps the most high-profile candidate for what physicists call a theory of everything – a single ...

Why does dark energy pose a problem for string theory? Dark energy is a hypothetical form of energy that would explain the accelerating expansion of the Universe.

Scientists are on the trail of a mysterious five-particle structure that could challenge one of the biggest theories in physics: string theory. This rare particle—never seen before and predicted ...

Can we ever truly have a theory of quantum gravity? What is supersymmetry, the landscape, and the AdS/CFT Correspondence? What do holograms have to do with this? How many dimensions do we live in?