Lab-grown Crohn's mini-guts, and is the Universe a doughnut?

In this edition of The Naked Scientists, Could lab-grown 'mini-guts' help us crack Crohn's disease? Also, is the Universe organised like a bagel? I talk to one cosmologist trying to figure it out. And we hear from the engineers who have recreated a 115-year-old cricketing contraption that bowled out an Australian legend back in the day! Like this podcast? Please help us by supporting the Naked Scientists