A parasitic worm accumulates epigenetic DNA tags over its lifetime.  

Bacteria that live in the digestive tracts of animals may influence the adaptive trajectories of their hosts.

Several labs have reported the formation of bacterial nanotubes under different, often contrasting conditions. What are these structures and why are they so hard to reproduce?

Christine Jacobs-Wagner's studies of a bacterial species have changed how scientists think about cell shape and polarity.

The Scientist’s 5th installment of its annual competition attracted submissions from across the life science spectrum. Here are the best and brightest products of the year.

Problems In Implementation LOUD AND CLEAR: Attorney Lynda Dee stresses the need for communication among the institutes. When a federally appointed panel announced in March the results of its 15-month-long review of the United States government's AIDS research program, AIDS activists as well as scientists cheered. The National Institutes of Health's AIDS Research Program Evaluation Working Group's recommendations largely called for scrapping what the group saw as outdated and ineffective polic