Science and U: Black Holes Explored, Invisible Walls in Space

[Video contains both hours. Skip past 45 minutes for hour 2.]

Now that another picture of a black hole has emerged, will physicist Dr. Weiping Yu finally admit that black holes exist? What do we make of the mysterious invisible walls that have been discovered in outer space? Is there a better explanation for all the quantum phenomena? Listen to the full segment to find out and more.