Naturalist Chris Packham investigates the impact a growing human population is having on the planet, asking whether the earth can sustain predictions of ten billion people by 2050.

Andrew Marr looks at life in Britain at the time of the 2011 Census, revealing unexpected trends and facts about a country we only think we know.

Using state-of-the-art 3D graphics and the timing of a stand-up comedian, world-famous statistician Professor Hans Rosling presents a spectacular portrait of our rapidly changing world. With seven billion people already on our planet, we often look to the future with dread, but Rosling's message is surprisingly upbeat.

Manila is one of the world's most overpopulated cities. Reporter Jenny Kleeman and director Richard Cookson find the Philippine capital stretched to breaking point, with mothers four to a bed in maternity wards, primary schools with a thousand children in each year, and graveyards with no more room to bury the dead. As the world faces an overpopulation crisis, Manila provides a vision of what might become ordinary in the not too distant future.