This week Paddy is joined from Beijing by Clifford Coonan who reports on the lifting of China's one-child policy and whether it will be enough to kickstart population growth in the greying country. The also look at phenomena from forced abortions to "Little Emperors" that have arisen from the decades-old restriction.

In part two (8.39) Washington Correspondent Simon Carswell looks at the increasingly competitive race for the Republican nomination, in which non-politician Ben Carson has seemingly overtaken non-politician Donald Trump. Meanwhile a little further down the poll, there's a battle taking place between slumping Jeb Bush and ascendent Marco Rubio. Who is Rubio, and can he win?