scientific american - 1996 11 - the origins of immunity
scientific american - 1996 11 - the origins of immunity
... dif-
ferent risk factors may affect the expres-
sion of the disorder,” the group con-
cludes in the Journal of the American
Medical Association.
The lead author of the study, the larg-
est of ... professor of psychology at
the University of Liverpool,
and other academics have
ruffled a few well-groomed
feathers in the staid linguis-
tics community. Their gos-...
scientific american - 2000 11 - the future of digital entertainment
... trade. The decline
was reinforced by the social unrest of the
late 1960s, which divided the supporters
of civil rights.
Furthermore, the economic crisis of
the 1970s strengthened the hand of the
more ... materials pro-
vide some of the first insight
into the lives of prehistoric
women, children and the eld-
erly
—or, as Soffer describes
them, the silent majo...
scientific american - 1994 04 - the dilemmas of prostate cancer
... each
cycle of the AC Þeld. When the marble
is hopping down the egg tray with the
help of the AC Þeld, augmenting the av-
erage tilt of the egg tray by increasing
the DC voltage does not change the av-
erage ... Kazumi Maki of the Universi-
ty of Southern California and by the late
John Bardeen of the University of Illi-
nois, but it is too early to tell w...
scientific american - 1995 12 - the puzzle of consciousness
... stunning
movie of our watery planet. The
spacecraft examined the outer
expanses of the earthÕs magnet-
ic Þeld and took the Þrst mea-
surements of the moonÕs far
side since the days of the Apol-
lo program. ... returned to the earth
over the low-gain antenna. Tape-search-
50 SCIENTIFIC AMERICAN December 1995
JAILBARS, slices of images taken of the asteroid...
scientific american - 1996 01 - the diet - aging connection
... perennial
fear of being held hostage to the suc-
cess of their favorite supplier. It dis-
tributes, and thereby speeds, the work
of adapting software to all the diÝerent
bits of hardware used on the Internet.
It ... researchers
tagged one of the photons of the pair
(speciÞcally, the one created by the la-
serÕs direct passage through the crys-
tal). That way, the...
scientific american - 1996 05 - the comets' lair
... case.
The type of mine, the specifics of its
operation, its position on the ground,
the position of the victim and the char-
acteristics of the environment at the ex-
plosion site all affect the ... status
reports. The
DOE had no way of know-
ing whether the project was on track.
Agency managers could not even esti-
mate the size of the new system. Never-...
scientific american - 1996 06 - the space station
... microorganisms.
If the impact of urban agriculture con-
tinues to broaden, the notion of the gar-
den city
the turn -of -the- century dream
of urban centers lined with trees and or-
namental plants
—may ... surprising: they whip
around the planet at up
to 200 meters per second.
Overall, however, data
from the probe’s 57-min-
ute descent did not chal-
lenge the prevailing...
scientific american - 1996 08 - the electronic wallet
... concentration of ozone-de-
pleting chemicals in the lower atmo-
sphere is falling off fast. Based on
their calculations, the amount had de-
creased some 1 percent by the middle
of last year. The decline ... can access the software that will
make them something other than a sili-
con-and-plastic paperweight. Larry El-
lison of Oracle reckons the low price of
an NC will make...
scientific american - 2000 06 - the birth of molecular electronics
... Africa.
The map shows data on the prevalence of wheezing
—a com-
monly used indicator of asthma
—for 1 3- and 14-year-olds, tak-
en from one of the largest epidemiological studies, the Interna-
tional ... FFlloooorr??
Molecular
Electronics
The Birth of
Copyright 2000 Scientific American, Inc.
Scientific American June 2000 37Profile
Profile
served specimen of one of...
scientific american - 2001 06 - the paradox of the sun's hot corona
... absolutely firm
in their convictions. And if you say to either one of them they’re
wrong, then they start tuning you out.” So McNutt tries to make
the 15-year-olds aware of the other’s position ... to one of the most beau-
tiful spectacles in all of nature: a total eclipse of the sun.
The two of us were among them. One of us (Phillips)
watched from Bulgaria as the gla...