Robert Gupta and Joshua Roman duet on "Passacaglia"

Google's driverless car | Sebastian Thrun

Why we have too few women leaders | Sheryl Sandberg

Kiran Bedi: How I remade one of India's toughest prisons

Harsha Bhogle: The rise of cricket, the rise of India

Innovating to zero! | Bill Gates

Herbie Hancock's all-star set

Thulasiraj Ravilla: How low-cost eye care can be world-class

Anupam Mishra: The ancient ingenuity of water harvesting

East vs west -- the myths that mystify | Devdutt Pattanaik

The thrilling potential of SixthSense technology | Pranav Mistry

Cameron Sinclair: The refugees of boom-and-bust

Richard St. John: "Success is a continuous journey"

Kaki King rocks out to "Playing with Pink Noise"

Al Gore: Alarming new slides of the worsening climate crisis

How to grow fresh air | Kamal Meattle

Unveiling game-changing wearable tech | Pattie Maes

Graham Hawkes: Fly the seas on a submarine with wings

James Burchfield: Sound stylings by a human beatbox

Why people believe weird things | Michael Shermer

Lakshmi Pratury: The lost art of letter-writing

Kenichi Ebina: Hip-hop dance and a little magic

Blaise Aguera y Arcas: Jaw-dropping Photosynth demo

Averting the climate crisis | Al Gore

Dean Ornish: The world's killer diet

Secrets of success in 8 words, 3 minutes | Richard St. John