Share: Title:Leonard Susskind - Why is Quantum Gravity Key? Duration: 9:19 Plays: 353K views Published: 4 years ago Download MP3 Download MP4 Simillar Videos ▶️ 9:29 Paul Davies - How Can We Find Deep Reality? 353K views • 1 month ago ▶️ 26:47 What Is Time? | Episode 1102 | Closer To Truth 353K views • 4 years ago ▶️ 57:54 Sean Carroll On Physics, The Multiverse, And Quantum Mechanics | Closer To Truth Chats 353K views • 6 months ago ▶️ 12:21 Robert Trivers - Mathematics And Evolution 353K views • 2 weeks ago ▶️ 26:47 What Is Nothing? | Episode 1212 | Closer To Truth 353K views • 4 years ago