Anthony Zee gives us a tour of gravity through Einstein's Theory of General Relativity. Anthony's book "On Gravity" is available now - https://geni.us/xAf86t. Starting with the discovery of gravity waves, Anthony goes on to explain how gravity can be understood in comparison to other classical field theories, presents the idea of curved spacetime and the action principle, and explores cutting-edge topics, including black holes and Hawking radiation. And what can our current knowledge tell us about what we don't yet know, from quantum gravity to mysteries of dark matter and energy. Watch the Q&A: https://youtu.be/OPBh7FCarGE Anthony Zee is a physicist, writer, and currently a professor at the Kavli Institute for Theoretical Physics and the physics department of the University of California, Santa Barbara. Professor Zee has authored or co-authored more than 200 scientific publications and several books. He has written on particle physics, condensed matter physics, anomalies in physics, random matrix theory, superconductivity, the quantum Hall effect, and other topics in theoretical physics and evolutionary biology, as well as their various interrelations. This talk was streamed live by the Ri on 28 July 2020. --- A very special thank you to our Patreon supporters who help make these videos happen, especially: Adam Leos, Alan Latteri, Andrew Downing, Andrew McGhee, Andrew Weir, Anonymous, Christina Baum, Dave Ostler, David Crowner, David Lindo, David Schick, Fairleigh McGill, Frances Dunne, Gou Ranon, Greg Nagel, Jan Všetíček, Jeffrey Schweitzer, Joe Godenzi, jonas.app, Kellas Lowery, Lasse T. Stendan, Martin Steed, Matt Townsend, Michelle J. Zamarron, Osian Gwyn Williams, Paul Brown, Paul Philippov, Rebecca Pan, Robert Reinecke, Roger Baker, Roger Shaw, Scott Edwardsen, Tim Karr, and William Billy Robillard. --- Subscribe for regular science videos: http://bit.ly/RiSubscRibe The Ri is on Patreon: https://www.patreon.com/TheRoyalInstitution