FIREFIGHTING STRATEGY: In the U.S., firefighters are trained to
kick down doors and douse flames with water pumped through
massive hoses. One of the oldest rules in the business is, don't
put water on smoke, especially if firefighters are nearby,
because the water will turn to steam and cause burns. If
firefighters use equipment to supply bursts of delicate fog to
smoke, this cools volatile gases. Because water is broken into
tiny droplets and deployed in extremely brief bursts, the
moisture's expanded surface area will cool the gases in the
smoke. Then firefighters can move closer to the blaze -- instead
of ducking for cover -- and once they are close enough, revert
to the old method of smothering the blaze with a massive
application of water. HUMAN FACTORS SCIENCE: This is a branch of
science that strives to design the job to fit the worker, rather
than the other way around. In the modern office, it most
commonly relates to the physical stresses placed on joints,
muscles, nerves, tendons, bones, even hearin