Video Article: The Patchwork Multiverse
Classic article with new video content: Cutting spacetime into patches could help explain the size of the universe, time—and provide the first ”experimental” evidence that string theory is on the right track.

The Cosmic Family Tree
Mapping the ancestral history of spacetime in an effort to unite quantum mechanics and general relativity.

Behind the Shadows
Imagining Schrödinger’s cat peering out from behind a black hole could lead to a theory of quantum gravity.

Why Did Nature Choose Quantum Theory?
Schrödinger’s cat may help reveal while some physical theories are better at describing reality than others.

Video Article: Through a Glass Darkly
Eight-dimensional numbers could be needed to handle string-theory’s 10-dimensional physics. This classic article, with new video content, also tackles the mystery of why elementary particles come in families of three—and maybe even how spacetime emerges in 4-dimensions.

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