02/29/2012 11:16 am ET Updated Apr 30, 2012

Experience the TED Prize Session Live Tonight

Tonight's TED Prize session is the only to be live streamed from TED -- to anyone in the world who wants to watch. TUNE IN from 5-6:45pm Pacific as we reveal two major announcements and celebrate the achievements of remarkable TED Prize winners.

In 2009, Jill Tarter wished to "empower Earthlings everywhere to become active participants in the ultimate search for cosmic company." Three years later, Arfon Smith takes to the stage to unveil the newest creation from Zooniverse -- SETI Live: a new site that opens the door for anyone to help search for intelligent life on other planets. For the first time ever, data being received by the Allen Telescope Array will be made public so citizen scientists can scan it for potential signals. Now everyone can help us answer the question, Are We Alone?

One person who isn't a alone is 2011 TED Prize winner JR, who wished to turn the world inside out with the largest, global participatory art project. He returns to the stage to share the mind blowing success of the Inside Out Project. In less than a year, more than 100,000 people in over 10,000 locations have contributed their portraits -- along with statements of what they stand for -- and pasted these images in their communities from Pakistan to Tunisia to Juarez to the Bronx and beyond. This project continues, and tonight's session will undoubtedly inspire others around the globe to stand up for what they care about.

Most exciting, during this live session we reveal the BIG secret -- the 2012 TED Prize winner's wish to change the world. For the first time ever, we awarded the TED Prize to an idea rather than a person: the City 2.0. All I can say now is that a group of leaders, advocates and innovators will be part of the big reveal. So watch tonight, and see what the City 2.0 wishes for us to do.