December 16, 2012

MP3 FILE / 60 MINUTES / 59 MB
Reviewing the top physics stories of 2012 with Ian Durham; searching for time's arrow in the string multiverse; & looking for the fundamental building blocks of space and time.
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Individual Stories

The Year in Physics: 2012 Review

MP3 FILE / 28 MINUTES / 27 MB
Physicist Ian Durham countdowns his highlights of 2012, including advances in astronomy, quantum foundations & particle physics. (Extended interview.)
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Time & the String Multiverse

MP3 FILE / 17 MINUTES / 16 MB
Raphael Bousso searches for the origin of time's arrow in the multiple universes predicted by string theory.
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The Building Blocks of Spacetime

MP3 FILE / 13 MINUTES / 12 MB
Joanna Karczmarek argues that spacetime is not fundamental -- and looks to string theory to find out what it's made from.
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