scientific american - 1997 12 - building the biggest

... the status of fish,with the southern half of the country having far more imper-iled species than the northern half; the large map belowshows the number at risk in the 2,111 watersheds of the ... which they originally resid-ed. Instead they ﬂow rather freely be-tween the atoms and are said to be de-localized. But they stay in or around the cluster because they are attracted to the now ... 8/7/98 12: 43 PM Page 39Copyright 1997 Scientific American, Inc.DECEMBER 1997 $4.95DINOSAUR TRACKS • THE MARTIAN FOSSILS1,500 feet over Kuala LumpurSPECIAL REPORT: BUILDING THE BIGGEST How the...

scientific american - 1997 09 - building doors into cells

... helpprevent the cell-to-cell spread of anyHIV particles that somehow survived the HIV-destroying therapy. The idea of simultaneously curing pa-In Search of AIDS-Resistance Genes50 Scientific American ... sophisticated Neander-thal: they buried their dead, made sym-bolic objects and adorned their bodies.And if they were playing musical instru-News and Analysis28 Scientific American September 1997 In Brief, ... AUERSSACopyright 1997 Scientific American, Inc. The Discovery of the Top Quark54 Scientific American September 1997 In March 1995 scientists gatheredat a hastily called meeting at Fer-milab the Fermi...

scientific american - 1994 12 - nasa's latest view of the earth

... conclusion. De-spite the hype surround-ing the Þeld, the expertswrote, Òthere is a substan-tial gap between the tech-nology that is availableand the technology that isneeded to realize the po-tential ... loners. The families have very diÝerent char-acters, which reßect the person-ality of the matriarch. In the case of Echo, the family is low-key and nonaggressive.How the 50-year-long rela-tionships ... good for the environ-ment and hence the country as awhole, she explains, the rural devel-opment program that planted thembrought peasants together. The re-sulting coalition diminished the army...

scientific american - 1995 12 - the puzzle of consciousness

... planet. The spacecraft examined the outerexpanses of the earthÕs magnet-ic Þeld and took the Þrst mea-surements of the moonÕs farside since the days of the Apol-lo program. These images re-vealed ... first slide the trousers off onto the rope, then push oneleg through the other. The outside leg isreversed twice in the process, leaving the trousers on the rope right-side out butwith the legs ... dioxide from the air for theirphotosynthesis. At night, the salps re-turn to the depths as much as a kilome-ter below. There they dump the refuseof a dayÕs work: fecal pellets that, Peris-sinotto...

scientific american - 1996 12 - traces of the big bang

... UtahCopyright 1996 Scientific American, Inc.The turn-of -the- century stone building is rotting inside, ﬂoor-boards dusty and dilapidated,pigeons roosting in the eaves. There areno windows in the moldy ... leishmani-asis is being conducted, and the “pep-tideria,” where the synthesized peptidesthat form the basis of the malaria vac-cine are stored. He also points out myr-iad other labs and the entrance ... Princeton Uni-versity who served on a panel that re-viewed the security implications of the NIF for the Department of Energy. Al-though the panel members had con-cerns about the facility, they did...

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 otherpart of the molecule (the cell-surface re-ceptor) breaks the links joining the lip-ids to one another, ... the way from the sun’s in-terior to the earth and out to the farthestreaches of the solar wind. Some of its in-struments are now poised to resolve sev-eral other mysteries. Two of them, the GOLF ... wake. The ultra-violet glow detected by this instru-ment therefore outlines the shapeof the sun’s wind. So far these mea-surements indicate that the solarwind is more intense in the equa-torial...

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 anyof the other females have cubs, theyform a crèche and remain in near-con-stant ... to them, somehome owners will balk at the idea ofselling their excess electricity at a dis-count to the local utility, which then re-sells the power for several times the price. The biggest ... 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-in-terest. At night the...

scientific american - 1997 06 - the microchip that rewires itself

... of bird-watchers, and theylove the birds. And after they watchthem, they go home and put up theirbug zappers. These birds, even the seed eaters, are feedingheavily on insects whenthey’re ... CRAWFORDCopyright 1997 Scientific American, Inc.News and Analysis Scientific American June 1997 31But the videotapes revealed that dis-satisﬁed females rarely assume the prop-er position for ... traveling the interstatesince the wee hours of the morn-ing and what they might saywhen they arrive at the Capitoland meet with their elected rep-resentatives. Most of his audi-ence probably...

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 oncomputer models, then on the real ... and Analysis52 Scientific American October 1997 CYBER VIEWMaster of Your DomainDAVID SUTER54 Scientific American October 1997 When the ﬁrst issue of Scien-tiﬁc American hit the streets on ... mostof their travel time on the ground. The Past and Future of Global Mobility Scientific American October 1997 61 The AuthorsANDREAS SCHAFER and DAVID VICTOR col-laborate on long-term and large-scale...

scientific american - 2000 12 - rulers of the jurassic seas

... SERVER CLUS-TER. These men are the defense the BlueTeam in this high-tech version of capture the ﬂag—and they lean back in theirchairs conﬁdently. This past March, theyclaim, their “agents”—computer ... When dinosaurs such as Iguan-odan grabbed the attention of paleon-tologists in the 1830s, the novelty of the ﬁsh-lizards faded away. Intense in-terest in the rulers of the Jurassic seasresurfaced ... cleaning the slate-encrust-ed bones. Because the bones are so frag-ile, they had to chip away the rock care-fully with ﬁne carbide needles as theypeered through a microscope.As the preparation...

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