^Oh, I wish I could take Lawrence Krauss and put him in my
pocket - his sense of humor, humility, all shines through the
whole talk. If you want to know the scientific basis behind
everything, some of the troubles faced by current physics, or
fill in the gaps in your knowledge of things, he's your man and
this is the talk. It's an hour of your life but you won't regret
it if you have even the slightest interest in such things.
^