scientific american - 1994 08 - red tides - a growing hazaed

... COLOMBIA CUBAECUADOREGYPTGREECEINDONESIA IRAN ISRAELLIBYAMALAYSIAPAKISTANPERUPHILIPPINESSAUDI ARABIA SINGAPORESOUTH AFRICASYRIA TAIWAN VENEZUELA ARGENTINABRAZILCHINA INDIANORTH ... Russiaand built a base at Bandar Abbas. TheU.S. then assigned two Los AngelesÐclassnuclear-powered attack submarines topatrol and map the area. Roughly a quar-ter of the worldÕs oil passes ... boat, and the U.S. assignedtwo Los AngelesÐclass nuclear-poweredattack submarines to patrol and mapthe area. A lthough diesel submarines have many advantages when deployed under appropriate...

scientific american - 1994 06 - was there a race to the moon

... forming a radial wave packet, wecreated a state that exhibits strongclassical characteristics. Our goal,however, was to form a classical atom.In that regard, the radial wave packethas a shortcoming. ... a stra-tegic management consulting Þrm. SCIENTIFIC AMERICAN June 1994 37Copyright 1994 Scientific American, Inc.McNamara was also intrigued by thepotential military applications of earth-orbiting ... super-position of states that have large quan-tum numbers is necessary for a wavepacket to demonstrate two hallmarkclassical features: spatial localizationand motion along an orbital path....

scientific american - 2003 08 - are you a hologram

... www.sciam.com SCIENTIFIC AMERICAN 21RANDY OLSON AuroranewsSCANMainstream climatologistsperceive flaws in a paper by WillieSoon and Sallie Baliunas, the twoHarvard-Smithsonian researcherswho ... weaker statementsabout global warming.logical consultant in Kew, Australia, and for-mer head of the Australian National ClimateCenter. But he says that “from a purely sta-tistical viewpoint, ... a quar-ter of inert substances, many on List 3, arealready classiﬁed as hazardous under theClean Air Act, the Safe Drinking Water Actand other federal statutes.Industry representatives argue...

scientific american - 1995 08 - a new theory of aids latency

... warming,and that coastal erosion and ßoodingare a reality. With half the planetÕs pop-ulation living in coastal areas, ancientand modern data suggest we may be in a madhouse again. ÑChristina StockRarely ... on. SCIENTIFIC AMERICAN August 1995 45PHILIP MORRISON at Los Alamos Labo-ratory in 1945.LOS ALAMOS NATIONAL LABORATORY (INSET)UPI/BETTMANNATOMIC SCIENTISTS gather at a basein the Marianas ... thatoften occurs after blood ßow has beenrestored in a heart-attack victim.Glycomed in Alameda, Calif., whichwas bought earlier this year by LigandPharmaceutical, also has what Hinds-gaul...

scientific american - 1993 08 - can particles move faster than light

... START IIwill increase the scale of the war-head disposal problem, Russiaand the U.S. are already dismantling nu-clear warheads at a considerable rateÑbetween 1,000 and 2,000 warheads a year ... IIRECIPROCALUNILATERALCUTS OF TACTICALNUCLEAR WEAPONSARZAMASRUSSIAPENZAZLATOUSTNIZHNYAYA TURAEKATERINBURGTOMSKKRASNOYARSK6,564UKRAINEWARHEAD ASSEMBLY/DISASSEMBLYPLUTONIUM SEPARATION ... Treaty as non-nuclear weapons states. Belarus has rat-iÞed both treaties, but Kazakhstan hasratiÞed only START I, and Ukraine hasratiÞed neither. Moreover, Russian hard-liners may oppose ratiÞcation...

scientific american - 1994 01 - searching for strange quark matter

... interference. A sea-wall or a dike at the landward boundaryof a salt marsh can prevent the inlandmigration of the marsh when the sea68 SCIENTIFIC AMERICAN January 1994 BOTTOMLAND HARDWOOD WETLANDS that ... lands of Cana-da, Alaska and Eurasia, in particular,may help moderate climatic change byserving as a sink for the greenhousegas carbon dioxide.Wetlands also have commercial andutilitarian functions. ... eÝect explains whyparticles containing strange quarks,such as the lambda (a baryon contain-ing an up, a down and a strange quark)or the KÕs (mesons containing an anti-strange quark paired with...

scientific american - 1994 02 - do aerosols slow climatic warming

... newestaircraft types: the F-117 Stealth Þght-ers, F-15s and F-16sÑAmericaÕs top-of-the-line ÞghtersÑand the sturdy A- 10ground-attack airplane. Marine and navyaviation units will augment ... runways onland in addition to those at sea. Thepresent 620 active carrier-borne navalÞghters, bombers and attack aircraftcan be pared to about 210 planes. Land-based, long-range maritime patrol ... cyclosporine is a natural productthat blocks an intracellular signalingpathway, as is the experimental immu-nosuppressant FK506. Ariad Pharma-ceuticals in Cambridge, Mass., a com-pany specializing...

scientific american - 1994 03 - visiting yourself in the past

... American, Inc.32 SCIENTIFIC AMERICAN March 1994 Clad in a dark, classically tailoredsuit and black shoes, Subrahman-yan Chandrasekhar approacheswith a slow but ßuid gait. He shakesmy hand ... 1,000SUB-SAHARANAFRICANEAR EAST ANDNORTH AFRICAASIA (EXCLUDING CHINA)LATINAMERICAArable LandSoil Erosion of Vegetated LandIN USEPOTENTIALCopyright 1994 Scientific American, Inc.reparable damage to global ... photograph hanging in hisoÛce. It shows a man climbing a ladderthat leans against some vast, abstractstructure. Like the ascending man, Wali says, Chandrasekhar is Òconstant-ly aware of...

scientific american - 1994 04 - the dilemmas of prostate cancer

... wea-pons remain nonlethal.The chairman of the con-ference was John B. Alexan-der, who heads the nonle-thal defense program at LosAlamos National Laboratory and hasbeen called (albeit by a ... was in-troduced to Alexander by a mutual ac-quaintance, Richard Groller, a formerintelligence oÛcer. Morris, AlexanderSTICKY FOAM engulfs a man-nequin in a test at SandiaNational Laboratories. ... respectively. Krug-man works primarily on internationaltrade and Þnance; he is a leading propo-nent of the view that historical and po-litical factors play at least as strong a role in trade as do underlying...

scientific american - 1994 07 - how cancers defeat drug therapy

... fissionidea (b), rapid rotation caused a piece of the early earth to a bCopyright 1994 Scientific American, Inc.dered near the earth. A few could havebeen as large as Mars. Hartmann andDavis hypothesized ... clear that large farms,which can a ord more ani-mals and equipment and canorganize their use more e - ciently, will have a significantadvantage over smaller hold-ings. The larger the farm ... with a layerof hardpan below that retains the wa-ter. Nitrogen-Þxing organisms that oc-cur naturally in the water serve as a ma-nure. Traditional rice varieties usuallyrespond well to organic...

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