Biology happens on many levels, from ecosystems to electron transport chains. These tools may help spur discoveries at all of life's scales.

The list of the year’s best new products contains both perennial winners and innovative newcomers.

Web Savvy Hard times for science are turning out to be good times for publishers of personal bibliographic software. As scientists feel increasing pressure to apply for grants from several agencies and submit articles to multiple journals, the value of bibliographic software rises. These programs, which store detailed reference information and export them in a wide variety of formats, are ubiquitous in scientific offices and laboratories (F. Hoke, The Scientist, Jan. 11, 1993, page 18; June 27,