Ed Ulbrich works at the leading edge of computer-generated visuals. On a recent project, filmmakers, artists, and technologists have been working at a breakthrough point where reality and digitally created worlds collide.
With Freeman Dyson's astonishing forecasts for the future, it was hard to tell where science ended and science fiction began. But far from being a wild-eyed visionary, Dyson was a clear and sober thinker -- and one not afraid of controversy or heresy.
Siegfried Woldhek knows faces -- he's drawn more than 1,100 of them. Using sophisticated image analysis and his own skills as an artist, he's come up with a fascinating discovery about Leonardo Da Vinci.
Mena Trott and her husband Ben founded Six Apart in a spare bedroom after the blogging software they developed grew beyond a hobby. With products Movable Type, TypePad, LiveJournal and Vox, the company has helped lead the "social media" revolution.
Barcelona-based architect Xavier Vilalta works in Europe, Africa and the Middle East. He adopts and updates traditional design principles to construct modern buildings that truly suit their environment.
Documentary filmmakers Beverly and Dereck Joubert have worked to conserve wildlife for more than 25 years. As National Geographic Explorers in Residence, the couple influences public policy and perceptions.