This is a fantastic and entertaining talk by Lawrence Krauss from the 2009 Atheist Alliance International on current cosmology, the nature and ultimate fate of our universe.
Lawrence Krauss has been one of my favorite speakers since I watched his talk from the first Beyond Belief in 2005. It’s amazing how much information the man can pack into one lecture. My favorite line:
Why is there something rather than nothing? … There has to be. In quantum mechanics, if you have nothing, you’ll always get something.