United Nations Population Fund (UNFPA) staff gives a cake to the family of newborn baby girl named Danica Camacho, the Philippines' symbolic "seven billionth baby" who is part of the United Nations' seven billion global population projection, in Fabella Maternity hospital in Manila Oct 31, 2011. The world's population will reach seven billion on 31 Oct 2011, according to projections by the United Nations, which says this global milestone presents both an opportunity and a challenge for the planet. While more people are living longer and healthier lives, says the UN, gaps between rich and poor are widening and more people than ever are vulnerable to food insecurity and water shortages. At right is Danica's father Florante. [Photo/Agencies]