By SETH BORENSTEIN
AP Science Writer Fri Jun 16, 2006 WASHINGTON - Gritty rats and mice living in sewers and farms seem to have healthier immune systems than their squeaky clean cousins that frolic in cushy antiseptic labs, two studies indicate. The lesson for humans: Clean living may make us sick.
The studies give more weight to a 17-year-old theory that the sanitized Western world may be partly to blame for soaring rates of human allergy and asthma cases and some autoimmune diseases, such as Type I diabetes and rheumatoid arthritis. The theory, called the hygiene hypothesis, figures that people's immune systems aren't being challenged by disease and dirt early in life, so the body's natural defenses overreact to small irritants such as pollen. |
SPX
Jun 16, 2006 London, UK - People are constantly pulled between profiting from the things they know will reap rewards and exploring new options - but it is exploration that uses high-level regions of the brain, according to a study by UCL (University College London) scientists published in Nature on 15th June.
By analysing how people's brains work while gambling, the team led by Dr Nathaniel Daw and Dr John O'Doherty, have found that trying out new things uses the human frontopolar cortex and intraparietal sulcus, whereas falling back on familiar territory involves areas of the brain associated with reward and pleasure. |
Leonard David
Livescience.com June 16, 2006 U.S. President George Bush is expected to unveil a new space policy for the nation, perhaps this month.
For all you peaceful uses of space (or is it useful pieces of space?) advocates, take note of recent remarks by John Mohanco of the U.S. State Department Deputy Office Director of Multilateral Nuclear and Security Affairs Division of the Department of State. Looks like Mohanco may have floated a bit of the policy out in front of a Conference on Disarmament meeting in Geneva earlier this week. |
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