TOP 100 SCIENCE SITES
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| U.S. urged to curb use of "dirty bomb" ingredient WASHINGTON (Reuters) - Radioactive cesium chloride found in medical and research equipment can be used as a deadly ingredient in a "dirty bomb," and U.S. leaders should try to curb its use, the National Research Council said on Wednesday. feeds.reuters.com |
Gauging Age of Universe Becomes More Precise Two additional years of data from a NASA satellite have narrowed the uncertainty in the age of the universe by tens of millions of years. nytimes.com |
Brazil finds prehistoric "Sea Warrior" crocodile RIO DE JANEIRO (Reuters) - A fossil of a new marine crocodile species found in Brazil shows the reptiles survived the extinction of dinosaurs 65 million years ago, researchers said on Wednesday. feeds.reuters.com |
China launches new space tracking ship to serve Shenzhou VII China launched a new space tracking ship on Saturday, expected to serve the Shenzhou VII spacewalk mission scheduled for autumn, said a spokesman of the maritime space surveying and controlling operation. The new space tracking ship ... english.people.com.cn |
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 |