Brian Greene Answers Questions on Quantum Physics, Spacetime, and the Universe

Physicist Brian Greene responds to a series of internet questions about quantum physics, cosmology, and fundamental physics. The discussion addresses counterintuitive quantum phenomena, the nature of space and time, and unresolved questions about reality.

■ Quantum physics foundations and interpretations
- Core ideas, superposition, entanglement, and measurement
- Schrödinger's cat, quantum tunneling, teleportation, and quantum computing

■ Spacetime and cosmology
- Wormholes, time travel, and the block universe
- Multiverse, the Big Bang, the beginning of time, black holes, and the end of the universe

■ Fundamental physics and open questions
- What reality is made of, string theory, and quantum gravity
- Why anything exists, atoms and energy, and laws for the very large

This is suited for viewers interested in a broad, accessible overview of modern physics. Watching provides a clearer sense of key concepts and open questions, and can serve as a starting point for further exploration.