Belarus opposition leader: Treason trial begins

The trial in absentia of the exiled Belarus opposition leader Svetlana Tikhanovskaya begins today on charges of treason. We speak to her to find out what she makes of the court case.

China's population fell last year for the first time in six decades, an historic moment that could mark the start of a long period of decline in numbers. We assess what's happening.

And we hear why volunteers are being asked to help spot walruses from space.