String theory attempts to unify general relativity and quantum theory. Popular in the 1990s, string theory fell out of favor as it failed to provide testable predictions and required ten dimensions ...

If you could take an apple and break it into smaller and smaller parts, you would find molecules, then atoms, followed by subatomic particles like protons and the quarks and gluons that make them up.

It’s been more than six years since we last visited Aperture Science in Portal 2, and in the ensuing years, Valve has shown a remarkable level of disinterest in continuing the beloved series’ dark and ...