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By Alister Doyle, Environment Correspondent OSLO (Reuters) - Quickening climate change in the Arctic including a thaw of Greenland's ice could raise world sea levels by up to 1.6 meters by 2100, an international report showed on Tuesday. [More]

Dieters take note: thinking in detail about eating can reduce actual food consumption, according to a study in the December 10, 2010, issue of Science .

Editor-in-Chief Mariette DiChristina and her daughters show us how to make Oobleck, a substance that's not quite liquid and not quite solid. For more fun activities to do with your kids visit scientificamerican.com/BringScienceHome.

Through the month of May, Scientific American Editor-in-Chief Mariette DiChristina presents Bring Science Home - a series of fun science activities parents and kids ages 6-12 can do together using household items.

Several devastating earthquakes have rumbled beneath the Pacific in the past 15 months. In Feb

Key concepts Gravity [More]

Psi, or the paranormal, denotes anomalous psychological effects that are currently unexplained by normal causes.

Will Al Qaeda respond to the death of Osama bin Lade n with serious cyber attacks? [More]

By Gwyneth Dickey Zakaib of Nature magazine On land, the pattern is a sadly familiar one: when an ecosystem is threatened, it is the large predators that usually suffer the greatest decline and therefore are most in need of protection. [More]

LABOR COSTS Average hourly compensation costs (wages, benefits, payroll taxes) for manufacturing workers, out of 34 surveyed countries: 1. Norway $53.89 14.

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The death of Osama bin Laden on Sunday, after more than a decade of pursuit, is a huge symbolic victory for U.S.

Obesity and dementia have a well-established connection in the medical literature. But a new study shows that just being overweight--with a BMI of 25 or above--in middle age might also significantly increase the odds that a person develops dementia later in life. [More]

By Roberta Rampton WASHINGTON (Reuters) - The U.S. nuclear safety regulator is studying whether to require plants to more quickly move radioactive waste out of pools as part of a review on safety in the wake of Japan's nuclear disaster, its chairman said on Monday. [More]

They could have used grappling hooks and longbows. The hunting down of Global Enemy No