In the late 1960s, the United Nations predicted that the world's population would reach nearly 12 Billion people by the mid 21st century. They warned of starvation and a strain on natural resources. Fast forward 35 years and we are no where near 12 billion, and obesity is said to be reaching 'epidemic' proportions in the developed world. But that doesn't stop the chicken littles at the U.N. from sounding the alarm.

The world's population will increase by 40 percent to 9.1 billion in 2050 but virtually all the growth will be in the developing world, especially in the 50 poorest countries, the U.N. Population Division says.

The division's revision Thursday of earlier estimates said the population in less-developed countries is expected to swell from 5.3 billion today to 7.8 billion in 2050. By contrast, the population of richer developed countries will remain mostly unchanged, at 1.2 billion.

"It is going to be a strain on the world," Hania Zlotnik, the division's new director, told a news conference.

She said the expected growth has "important and serious implications" because it will be concentrated in countries that already have problems providing adequate shelter, health care and education.

If we enroll all these people in Social Security, maybe I'll get my 'guaranteed' benefits after all.