Feeding the next billion: hunger and conservation

Sometime in October 2011 the human population reached seven billion. The date is uncertain—nobody knows exactly how many people there are as national censuses are intermittent and many inaccurate (Bloom, 2011). But the exact date does not matter: this was a political not demographic event. The seven billionth child was deemed by the UN to have been a girl, born in Manila, Philippines.