The world is days away from officially reaching a population of 7 billion, the United Nations said in a report Wednesday.
The milestone, to be declared on October 31, is a huge spike from less than a century ago. In 1927, the global population was only 2 billion.
Only 13 years ago, the population was at 6 billion, the U.N. says.
While reaching 7 billion in 2011 has long been predicted, the new U.N. report Wednesday - "State of World Population 2011" - looks at challenges and opportunities coming from the dramatic growth.FULL STORY