2011: 7 Billion People On Earth

Robert Kunzig of National Geographic has estimated that in 2011, there will be 7 billion people inhabiting the planet. The amount of people is growing because people are living longer and more women are in their child bearing years. Consequentially, the more people there are, the more resources are being depleted. This means more forests will be cleared, more coal and oil will be burned, and more fertilizers and pesticides will be used freely. Over the past 200 years, the world population has increased, jumping to the next billion in just a decade. According to Kunzig, this also means that the amount of “megacities” has dramatically increased as well from three in 1975, to 21 today.

Read the article by Robert Kunzig from National Geographic.

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