The FQXi podcast brings you the latest ideas in foundational physics and cosmology—and includes interviews with our members and other leading scientists. It's hosted by Zeeya Merali and Brendan Foster. You can contact us at firstname.lastname@example.org, and follow us on twitter: @FQXi. The podcast is produced by Zeeya, and music is provided by Baltimore-based Diefenbaker.
Could the multiverse, the cyclic universe, or the "cosmic egg" universe have existed infinitely into the past? If the universe had a beginning, can we detect *where* it occurred? (Extended interview with Alex Vilenkin.)