The inexorable rise of the fish farm

Part of our series on America in 2050...

Fish farm
(Image credit: Abid Katib/Getty Images)

In 2050, there will be two billion additional people living on Earth. India will be the largest country in the world, and more people will call Nigeria home than the United States. The average life expectancy for developed nations will be 89, developing nations 81.

These predictions from a 2012 United Nations demographic report on world population growth raise some big questions that could eventually cut across economies, borders, and national politics. But for researchers looking at the world's food supply, a spike in world population prompts the most essential question of all: How will all these people find enough to eat?

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Matt Hansen has written and edited for a series of online magazines, newspapers, and major marketing campaigns. He is currently active in press freedom and safety research with Global Journalist Security.