What's driving China's nuclear energy expansion?

China is on track to become the world's largest generator of nuclear energy, with 112 reactor units either in operation, under construction, or approved. It has signed on to an international pledge to triple global nuclear energy capacity by 2050. How is China growing from a nuclear newcomer to the world's largest generators of nuclear power? How is nuclear technology evolving? And what's driving this renewed global momentum behind nuclear energy? Zhao Ying speaks with Professor Zhao Jiyun from the Department of Mechanical Engineering at the City University of Hong Kong.