Something From Nothing?

Cosmologist Lawrence M. Krauss believes that the universe probably came from nothingness:

[W]hat I find remarkable is the fact that the discoveries of modern particle physics and cosmology over the past half century allow not only a possibility that the Universe arose from nothing, but in fact make this possibility increasingly plausible.  Everything we have measured about the universe is not only consistent with a universe that came from nothing (and didn’t have to turn out this way!), but in fact, all the new evidence makes this possibility ever more likely. Darwin demonstrated how the remarkable diversity of life on Earth, and the apparent design of life, which had been claimed as evidence for a caring God, could in fact instead be arrived at by natural causes involving purely physical processes of mutation and natural selection.  I want to show something similar about the Universe.  We may never prove by science that a Creator is impossible, but, as Steven Weinberg has emphasized, science admits (and for many of us, suggests) a universe in which one is not necessary.