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Science News for July 20, 2003


E-learning is still an uncertain, developing market

Established educational websites dominate the e-learning market, prioritizing branding over content and interactivity. Despite potential for growth in home learning, government testing imperatives hinder innovation and competition.

SourceEconomic & Social Research Council·DateJul 20, 2003
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Single protein is key in response to bacterial, viral infections

Researchers discovered Trif, a critical transducer protein in the innate immune system, which mediates signals from both bacterial and viral infections. The protein's role sparks inflammation, making it an attractive target for drugs designed to combat runaway inflammation characteristic of infectious diseases.

SourceNIH/National Institute of Allergy and Infectious Diseases·JournalNature·DateJul 20, 2003

Stars rich in heavy metals tend to harbor planets

Research by Debra Fischer and Jeff Valenti found a correlation between star metal abundance and planet formation, with metal-rich stars having a 20% chance of harboring planets. The data suggest that a threshold metallicity exists, favoring the formation of planetary systems in stars with higher initial metal content.

SourceUniversity of California - Berkeley·DateJul 20, 2003