The Population Reference Bureau projects that world population will pass 7 billion in 2011. Where is much of the growth occurring? In poorer countries, where it is "exacerbating poverty and threatening the environment," according to William P. Butz, the president of PRB. Is human population the elephant in the room when it comes to discussing hunger and poverty?

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Heifer International

Heifer International is a nonprofit, non-governmental organization working with communities to end hunger and poverty while caring for the Earth.