21 October 2009
Vol 1, Issue 3

About The Cover

Cover image expansion

ONLINE COVER Illustration of Mycobacterium tuberculosis. This bacterium, which causes the worldwide disease tuberculosis or TB, has acquired resistance to several of the common drugs used to fight it. Fears have been raised that these drug-resistant strains are spreading. But a global effort to eradicate the disease has—at least in Eastern Europe, the United Kingdom, Hong Kong, and the United States—apparently contained the spread of these bacteria so that, with time, drug-resistant tuberculosis may be on the way out (see Dye and Williams). [Credit: Chris Bickel, AAAS]