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Science  12 Nov 1999:
Vol. 286, Issue 5443, pp. 1251
DOI: 10.1126/science.286.5443.1251c

Outbreaking news. ProMED-mail, the 5-year-old e-mail list that relays emerging infectious disease reports from around the world, has just launched a new site with summaries of the last 24 hours, a calendar, articles, links, and much more.

Looking for Leonids. Some experts predict that this year's Leonid meteor shower will be a full-fledged storm, offering a spectacle for skywatchers on 18 November. Check out for predictions, real-time data, and links; watch a live Web cast from a camera on a weather balloon at; or add your photos to this new NASA community image library at

Immuno flicks. The body's immune response involves a complex choreography of specialized cells. To help students understand these ideas, this site features Shockwave movies of steps such as somatic recombination, antigen loading, and B cell maturation. Also check out the histology atlas that lets you zoom in on immune cells in a slice of thymus or bone marrow.

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