What kind of world do we want for our great-great-grandchildren?
That is the question being asked by The Elders are they launch their new Elders+Youngers initiative.
In the video above, Elders Desmond Tutu, Gro Brundtland, Fernando Henrique Cardoso and Mary Robinson debate with four young activists Marvin, Esther, Pedro and Sara to find new ways of thinking on the most urgent issues facing our planet today.
The Elders wrote: "In June 2012, world leaders are coming together in Rio for a summit on sustainable development. Their actions or inactions will shape this planet for generations to come."
Good jobs? Clean air? Food security? What do you want that world to look like for our great-great-grandchildren? Join the debate with Elders+Youngers.