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For the West, the nuclear crisis in Japan and the upheaval in the Middle East have again raised concerns about energy supply and security.

In the developing world, there are still 1.6 billion people with no access to electricity, and energy demand is expanding dramatically in emerging economies.

The challenge and risks facing these countries are enormous, and the energy choices they make will have consequences for us all in terms of security and environment.

The World Debate asks, how do we power the developing world in the 21st century?

Chaired by Zeinab Badawi.