Discussing the quantization of gravity and its history.

Hosting many scientists including: Bill Unruh, Jim Hartle, Roger Penrose, Jon Halliwell, Fotini Markopoluo, Andy Albreht, Fay Dowker, Carlo Rovelli, Lee Smolin, Paul Davies, Ted Jacobson, Sabine Hossenfelder, Christopher Isham, Michele Reilly, Seth Lloyd