human population

(Newser) - America’s Rust Belt continues to corrode a little more each day, reports Forbes in its analysis of the nation’s fastest-dying cities. Cities in Ohio and Michigan take 6 of the top 10 spots in the survey, which is based on population flight and unemployment:

• Canton, Ohio
• Youngstown, Ohio

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(Newser) - The world's soaring population is expected to hit 7 billion by 2012, further straining thinly stretched natural resources, AP reports. The current population is 6.7 billion, and growing at 1.2% a year, spurred by increasing medical and nutritional advances in developing countries. But as more women in developing...

(Newser) - Researchers using mobile-phone data to study patterns of human movement find that we're quite creatures of habit, the BBC reports. The 100,000 randomly selected subjects—outside the US, where such tracking would be illegal, the AP notes—remained mostly in the same small area, traveling less than 6½ miles...

(Newser) - A cougar shot April 14 in Chicago was spotted earlier in Wisconsin, DNA tests show, suggesting an epic trek. Now, scientists are eager to study the animal, hoping to learn more about how and why it migrated; they aim to pin down its ancestry in an effort to better understand...