Black Hole Entropy - Panel Discussion with Alejandro Perez and Leopoldo A. Pando Zayas
53:09
On loop quantum gravity - Carlo Rovelli
1:35:26
Basic Twistor Theory, Bi-twistors, and Split-octonions - Roger Penrose
57:06
Evaporating Black Holes, New Quantum Analogues, and a Breakdown of Classicality - Sebastian Zell
11:48
'My jaw is dropped': Canadian official's interview stuns Amanpour
2:37:06
Best of Dvořák - Essential Classical Music
2:09:54
Classical and Quantum Black holes - Lecture 1 - Alejandro Perez
1:28:06
What Every Physicist Should Know About String Theory - ICTP Theoretical Physics Colloquium
1:05:43