The Edge of Knowledge: Unsolved Mysteries of the Cosmos

Lawrence Krauss explores the greatest unanswered questions at the forefront of science today, and likely for the coming century and beyond.

Internationally known theoretical physicist and bestselling author Lawrence Krauss explores science’s greatest unanswered questions.

Three of the most important words in science are “I don't know.” Not knowing implies a Universe of opportunities—the possibility of discovery and surprise. Our understanding of science has advanced immeasurably over the la...