Timothy Bickmore, Professor at Northeastern University, discusses his research with a virtual nurse that helps patients understand their medical conditions and medications when they are discharged from a hospital. (March 12, 2010)

Michael Naimark discusses the technologies of web applications that use photos and video to document the Earth. (March 5, 2010)

Rajat Paharia, founder and Chief Production Officer of Bunchball, discusses participation engines and the use of game dynamics and behavioral economics to incentivize and motivate user participation on the web. (February 19, 2010)