- StumbleUpon. Richard Dawkins on militant atheism | Video on TED.com - StumbleUpon. Brian Greene on string theory | Video on TED.com - StumbleUpon. Michael Pawlyn: Using nature's genius in architecture | Video on TED.com - StumbleUpon. Pranav Mistry: The thrilling potential of SixthSense technology | Video on TED.com - StumbleUpon.