Population 7 Billion - Alan Taylor - In Focus - The AtlanticPopulation 7 Billion Alan Taylor October 24, 2011 42 Photos In Focus The United Nations Population Fund estimates that in one week, on October 31, 2011, the world's population will reach 7 billion. Just 200 years ago, there were only 1 billion people on the planet, and over the next 150 years, that number grew to 3 billion. But in the past 50 years, the global population has more than doubled, and
