Supergravity to the rescue?
This is one of our podcasts from Stephen Hawking's 70th birthday conference, which took place in January 2012 in Cambridge. Rachel Thomas talks to Renata Kallosh from Stanford University about a theory that promises to unite the physics of the very small — quantum physics — and the physics of the very large — Einstein's theory of gravity. It's called N=8 supergravity. The podcast accompanies the article Supergravity to the rescue?, which contains more information on the concepts that are being discussed.