Population 7 Billion

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 the UN projects that it could possibly grow to 15 billion by the year 2100. As the international organization points out, this increasing rate of change brings with it enormous challenges. Meeting the basic needs of so many will mean growing, shipping, and distributing more food while providing more clean water, health care, and shelter -- all without inflicting too much further damage on our environment.

Read more
Hints: View this page full screen. Skip to the next and previous photo by typing j/k or ←/→.

Most Recent

  • Kai Pfaffenbach / Reuters

    2016: The Year in Photos, May-August

    Time to take a look back at some of the most memorable events and images of 2016. Among the events covered in this essay: the Summer Olympics in Rio, the U.S. Republican and Democratic national conventions, the Pulse Nightclub shooting in Orlando, and much more.

  • Stefan Wermuth / Reuters

    2016: The Year in Photos, January-April

    Time to take a look back at some of the most memorable events and images of 2016. Among the events covered in this essay: earthquakes in Ecuador and Taiwan, the passing of entertainers David Bowie and Prince, and much more.

  • Jonathan Bachman / Reuters

    Top 25 News Photos of 2016

    The past 12 months have been an eventful time for news stories, from the unpredictable and tumultuous U.S. presidential election, to continued war and terror and refugees fleeing to Europe, to a historic World Series win for the Chicago Cubs, and so much more.

  • Matt Eich

    A Hidden American Anger

    Life in Ohio's proud but economically abandoned small towns

Join the Discussion