BBC News

Tim Rogers investigates the effectiveness of sports supplements, looking at whether they work and whether users can be sure of what they are getting.

DJ Edu is on a journey to find the best nightlife in Africa as part of the BBC's Richer World season - looking at how many across the world are getting richer. He visits Kenya, the Democratic Republic of Congo, South Africa, Morocco and Botswana.

This year the Queen became Britain's longest reigning monarch. Sarah Campbell looks back on the momentous occasion and another royal birth in Review 2015: The Royal Year.

Rebecca Morelle looks back on the year in science – from a British astronaut blasting off into space, to efforts to halt global warming here on Earth.