very light and fast
Feature Focus: Developments in materials, production methods, and turbine design have spawned a new class of business jet. By Alan S. Brown

where does CAM stand?
Researchers are pushing to get more manufacturing assistance from the
computer. By Jean Thilmany

the rebirth of cool
The Montreal protocol dictates that in four years new equipment cannot use the
refrigerant R-22. Meeting that deadline is one thing; finding ways to keep us—and the planet—cool is another. By Michael Abrams

the injunction factor
A power that patent holders once held over infringers isn't as certain these days. By Jeff Woller

input/output
No Life on Mars. By Jean Thilmany

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