7 Billion How Your World Will Change.
Sometime in late October 2011, the 7 billionth citizen of planet Earth will be born. To mark the event, National Geographic magazine commissioned seven articles that explore the fascinating issues--including demographics, food security, climate change, fertility trends, managing biodiversity--surrounding this topic, which are collected for the first time in this special ebook. Environment editor Robert Kunzig starts by sketching out a nat...