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Earth's Population to Reach Seven Billion in 2011

Photo Courtesy - Getty Images(NEW YORK) -- The clock is ticking. The United Nations Population Division predicts that with about five babies born every second, the world will have seven billion people sometime late this year.

It was fewer than one billion in 1800, three billion in 1960, and six billion as recently 1999. The number keeps growing. The planet does not. Thomas Malthus famously predicted in 1798 that at some point, it would all be too much: starvation and disease would kill people more quickly than we can replace them.

But is this year's milestone cause for worry? Or just the opposite -- celebration?

"With the population still growing by about 80 million each year, it's hard not to be alarmed," writes Robert Kunzig, the author of National Geographic magazine's January cover story, "7 Billion." "Right now on Earth, water tables are falling, soil is eroding, glaciers are melting, and fish stocks are vanishing. Close to a billion people go hungry each day."

There is poverty more dire than most of us in America can imagine, but the growing population has not caused the world to collapse. Instead, we've conquered infectious diseases, learned how to grow more food, provided clean water even in crowded cities.

The much-discussed "population bomb" may yet go off, says Kunzig -- but so far it has not.

"Why did the population boom happen?," he asked in a telephone interview. "We conquered death. We saved a lot of children from dying."

What's more, though the world population continues to rise, the rate appears to be slowing. It is not because people are dying off; instead, it is because people have fewer children as they become wealthier. If babies are not dying of smallpox or cholera, their parents will need fewer just to keep the family farm going.

Already, in parts of Europe and East Asia, they worry about the opposite of a population explosion: not enough young people to support the growing number of retirees. Demographers say the average couple needs to have 2.1 children to keep the population steady. In western Europe, the actual number had dropped to 1.4 by the late 1990s.

Copyright 2011 ABC News Radio

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    Earth's Population to Reach Seven Billion in 2011 - World News - ABC News Radio

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