China's population falls: What does it mean?

China's population has fallen for the first time in 60 years. It's an historic turn that is expected to mark the start of a long period of decline in numbers - we investigate what it might mean for the world and the climate.

In the UK, the Metropolitan Police are facing increasing scrutiny, with hundreds of the capital's officers are being questioned over sexual abuse allegations.

And what does an earthquake on the ocean floor sound like? We hear the remarkable sound of pressure waves from an earthquake and find out more with our Science Correspondent, Jonathon Amos.