China Is The New Superpower In Science?

China has a robot rover on the moon and the world's fastest supercomputer, so it is emerging as the new superpower when it comes to science. It is spending vast sums of money on research, and one of the key areas of that research is cloning.

The BBC's science editor David Shukman was given rare access to a factory that creates 500 cloned animals each year, and brings us this report.