This week has been thick with Berkman-related audio: conversations with Judith Donath, John Palfrey, David Hornik, and Esra'a Al Shafei all made their way onto the Net; we hope you will listen in...

• Judith Donath on social networks and the theory of Charles Darwin (BBC Radio 3)


• David Hornik on venture capital and technology innovation in the economic crisis (Radio Berkman)


• John Palfrey on Born Digital (Tech Policy Weekly's Tech Book Corner)


• Esra’a Al Shafei on the challenges of activism in the Middle East (Berkman events)