Did Our Universe have a Beginning? (Alexander Vilenkin)

For any who are interested in the question "Did our universe begin to exist?" here is physicist Alexander Vilenkin interviewed by neuroscientist Lawrence Kuhn.

See also Alan Guth's interview. Guth discovered inflationary theory. Note that he doubts inflation could go on eternally in the past, but rather had an absolute beginning. So even the multiverse, if it exists, had a beginning.