Transposon mutagenesis give scientists a rare look at the most important interactions within microbial communities.

In the evolutionary arms race between pathogens and hosts, genetic elements known as transposons are regularly recruited as assault weapons for cellular defense.

Researchers develop a CRISPR-based, two-phage system that sensitizes resistant bacteria to antibiotics and selectively kills any remaining drug-resistant bugs. 

Researchers are abandoning the concept of a list of genes sequenced from a single individual, instead aiming for a way to describe all the genetic variation within a species.

From therapeutics to gene transfer, bacteriophages offer a sustainable and powerful method of controlling microbes.

Exercises Author: NEERAJA SANKARAN, pp.1 Date: June 27,1994 Dozens of distinguished science figures have been among the luminaries receiving honorary degrees and offering their words of wisdom to graduating students throughout North America over the past two months. Scientists so honored include Francis S. Collins, director of the National Center for Human Genome Research; Frank Press, former president of the National Academy of S

Exercises Author: NEERAJA SANKARAN, pp.1 Date: June 27,1994 Dozens of distinguished science figures have been among the luminaries receiving honorary degrees and offering their words of wisdom to graduating students throughout North America over the past two months. Scientists so honored include Francis S. Collins, director of the National Center for Human Genome Research; Frank Press, former president of the National Academy of S

Editor's Note: On May 2, the National Academy of Sciences announced the election of 60 new members and 15 foreign associates from nine countries in recognition of their distinguished and continuing achievements in original research. Nearly half of the new members are life scientists. In this article, The Scientist presents photographs of some of the new members and comments from a few of them on their careers and on past and current research. A full directory of NAS members can be found online a

John D. Roberts Arthur J. Hundhausen John Clarke R. John Collier Arnold O. Beckman C. Grant Willson The National Academy of Sciences (NAS) will present awards today to 17 scientists whose work defined, refined, or advanced a field. The awards will be presented during the NAS's 136th annual meeting in Washington, D.C. Scientists elected to NAS in 1998 also will be inducted at the meeting. The NAS's highest honor, the Public Welfare Medal, goes to Arnold O. Beckman, founder of both Beckma

The Scientist has asked a group of experts to comment periodically upon recent articles that they have found noteworthy. Their selections, presented herein every issue, are neither endorsements of content nor the result of systematic searching. Rather, the list represents personal choices of articles the columnists believe the scientific community as a whole may also find interesting. Reprints of any articles cited here may be ordered through The Genuine Article, 3501 Market St., Philadelphia,