scientific american - 1997 06 - the microchip that rewires itself
scientific american - 1997 06 - the microchip that rewires itself
... CRAWFORD
Copyright 1997 Scientific American, Inc.
News and Analysis Scientific American June 1997 31
But the videotapes revealed that dis-
satisfied females rarely assume the prop-
er position for ... could be probes that mea-
sure thermal conductivity. But for iden-
tifying TNT, the main charge in 80 per-
cent of mines, systems that “sniff” va-
pors might offer the be...
scientific american - 1995 06 - the world's strongest magnets
... idea that
they were the few Cretaceous survivors.
The foundation of this theory began
to shake in 1981, when fossils of Òop-
posite birdsÓ were unearthed in China
and, then, all over the Northern ... scan. The participants
then judged how much sentiment they
had mustered. George found that men
and women deemed themselves equal-
ly sad, but the brain activity of the two
SCIENTI...
scientific american - 1996 06 - the space station
... measure-
ments of the brisk Jovian winds have
permitted slightly more conclusive the-
ories about the planet’s meteorology. Be-
fore the probe plunged, scientists won-
dered whether the thermal ... ATP is phosphocrea-
tine, itself a high-energy, phosphate-bear-
ing molecule. The energy released by the
breakdown of the phosphocreatine mol-
ecule is used to resynthesize ATP....
scientific american - 1997 03 - the rising seas - how much of a threat
... polydiacety-
lene film, which happens to be blue. But
the binding of E. coli toxin to the other
part of the molecule (the cell-surface re-
ceptor) breaks the links joining the lip-
ids to one another, ... wake. The ultra-
violet glow detected by this instru-
ment therefore outlines the shape
of the sun’s wind. So far these mea-
surements indicate that the solar
wind is mor...
scientific american - 1997 05 - the 100 - year weather forecast
... preda-
tors. Once the cubs can move, though,
the mothers bring them out into the
open to join the rest of the pride. If any
of the other females have cubs, they
form a crèche and remain in near-con-
stant ... of other males.
Male lions display their greatest ca-
pacity for teamwork while ousting in-
vaders
the situation that presents the
greatest threat to their common self-...
scientific american - 2000 06 - the birth of molecular electronics
... not seem to be the stuff
of wild urban legend anymore. Neverthe-
less, the rich mythology that has sprung
up around the 840-acre island makes it a
must-see stop on the con-
spiracy theorist’s world ... the fiber that finally
makes earth-tethered satellites possible.
Considering that the longest-known nano-
tubes are on the order of one millimeter,
thoughts of a 35,800-kilome...
scientific american - 2001 06 - the paradox of the sun's hot corona
... of which-stars-
are-not-like -the- others. The sun and most
other stars swirl around the galactic center
within a thin circular disk. Nearly a century
ago, however, astronomers noticed that some
stars ... grow the same way that planets do:
from the agglomeration of smaller units. The
layering of the Milky Way bears that out. On
the other hand, cold-dark-matter theories
hav...
scientific american - 1993 06 - tuning in the radio signals of ancient galaxies
... all that much. Most of the wom-
en in the rural areas have that same cy-
cle, and they teach the same values to
their children. They teach their sons to
order; they teach their daughters that
they ... test
the hypothesis that defects in the gam-
ma-chain gene were causing the im-
munodeficiency. With the further assis-
tance of Howard M. Rosenblatt of the
Baylor College...
scientific american - 1994 06 - was there a race to the moon
... Scientific American, Inc.
SCIENTIFIC AMERICAN June 1994 33
I
n 1939 a 33-year-old French mathe-
matician proved that a profound
conjecture about the behavior dis-
played by prime numbers as they ... by then they knew
that the U.S. intended to send humans
into orbit around the moon later that
month. This launch presented the Sovi-
ets with perhaps their Þnal opportuni-
ty...
scientific american - 1997 10 - special issue - the future of transportation
...
Copyright 1997 Scientific American, Inc.
News and Analysis32 Scientific American October 1997
So last summer the group experiment-
ed with the two structures, first on
computer models, then on the real ... Bal-
asubramanian. Last year, while chatting
in the car on the way home from a con-
ference, Regan suggested that two pro-
teins being studied in the lab might just...