South Korea swaps first astronaut
South Korea replaces its first-choice candidate for a space mission, after a request from Russia. news.bbc.co.uk
Study finds key factors behind bird flu outbreaks
WASHINGTON (Reuters) - Ducks, people and rice paddies are the primary forces driving outbreaks of avian influenza in Thailand and Vietnam, and the number of chickens is less pivotal, scientists said on Wednesday. feeds.reuters.com
Starwatch
The Moon stands in the heart of our S sky at nightfall today, a few degrees to the right of Saturn and the star Regulus in Leo guardian.co.uk
Pittsburgh surpasses Los Angeles as nation's sootiest city
LOS ANGELES (AP) -- A city outside California has for the first time been named the sootiest in the nation, one of the categories the American Lung Association uses to determine the most polluted cities in the country.... hosted.ap.org