http://www.ted.com Tod Machover of MIT’s Media Lab is devoted to extending musical expression for everyone — from virtuosi to amateurs, and in the most diverse forms — from opera to videogames (Guitar Hero grew out of his group). At TED2008 he talks about what’s coming next, from new tools for music creativity to the world’s first robotic opera. Machover then introduces Dan Ellsey, a young man with cerebral palsy who has found his voice through music created and performed using Media Lab technologies. Ellsey plays his “My Eagle Song” in a soaring rendition that underscores music’s power to heal, to communicate, and to inspire.

http://www.ted.com Satirist Tom Rielly delivers a wicked parody of the 2006 TED conference, taking down the $100 laptop, the plight of the polar bear, and people who mention, one too many times, that they work at Harvard. Watch for a very special moment between Tom and Al Gore. Impossible to summarize, pointless to explain, ladies and gentlemen, Tom Rielly …

http://www.ted.com In this bracingly honest and funny talk, international security strategist Thomas P.M. Barnett outlines a post-Cold War solution for the foundering US military: Break it in two. He suggests the military re-form into two groups: a Leviathan force, a small group of young and fierce soldiers capable of swift and immediate victories; and an internationally supported network of System Administrators, an older, wiser, more diverse organization that actually has the diplomacy and power it takes to build and maintain peace.

http://www.ted.com In a taut soliloquy that takes us from the origins of the universe to the last days of a dying sun 6 billion years later, renowned cosmologist Sir Martin Rees explains why the 21st century is a pivotal moment in the history of humanity: the first time in history when we can materially change ourselves and our planet. Stunning imagery of cosmological wonders show us the universe as we know it now. Speaking as “a concerned member of the human race,” Rees harkens to the wisdom of Einstein, calling for scientists to act as moral compasses, confronting the coming developments and ensuring our role in “the immense future.”

http://www.ted.com Rural villages worldwide are being deserted, as billions of people flock to cities, to live in teeming squatter camps and slums. And Stewart Brand says this is a good thing. Why? It’ll take you 3 minutes to find out. Music: Brian Eno, “Just Another Day on Earth,” from his 2005 album Another Day on Earth (Hannibal).