The UN predicts that by 2050, one in three people will live in a slum. But what determines where you live and how does your environment shape your health, hopes and prospects? In a special season of coverage, Al Jazeera explores our relationships with the places we call home. The six-part documentary series The Slum introduces the residents of Tondo - the most densely populated and least developed part of Manila - as they strive for success against the odds.