Washington, Mar 19: Queen’s University researchers have found that kids who exercise in bouts of activity lasting five minutes or longer are less likely to become obese than those whose activity levels are more sporadic and typically last less than five minutes each.

Washington, Mar. 19: President Obama and his advisers have decided to significantly expand security forces in Afghanistan in the hope that a much larger professional army and national police force could promote stability in that country.

Washington, Mar 19: A new study has revealed that smokers who refuse to quit the habit despite being diagnosed with lung cancer experience higher levels of pain from the disease than non-smokers and former smokers.

Researchers at Duke University surveyed some 900 lung cancer patients and classified 17 percent of them as persistent smokers.

The aim of the study was to assess the relationship of smoking status after a diagnosis of lung cancer with ratings of usual pain.

Washington, Mar 19 : Former US President George W. Bush has written about 30,000 words of his memoir tentatively titled "Decision Points" that will cover everything from how he found faith, to how he quit drinking and chose Karl Rove and Dick Cheney for their respective jobs.

A contract with Crown, an imprint of Random House, is to be announced on Thursday. The same publisher issued both of President Obama's books, Politico reports.

Washington, March 19 : A national survey by researchers at Yale and George Mason Universities has revealed that even in the midst of a growing economic crisis last fall, over 90 percent of Americans want the United States to act to reduce global warming.

The results included 34 percent who said the US should make a large-scale effort, even if it has large economic costs.

Washington,