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News of the Week:
Nailing Down Pheromones
in Humans
Women exude chemicals that influence the menstrual cycles of other women with whom they have close contact.
Sources:
David H. Abbott
University of Wisconsin-Madison
Department of Medicine
H4/568-5148 Clinical Science Center
600 Highland Avenue
Madison, WI 53792Martha K. McClintock
University of Chicago
Department of Psychology
Chicago, IL 60637
Human ancestor may have taken to sea
Stone artifacts found on an Indonesian island provide evidence for sea travel by a predecessor of humans at least 800,000 years ago.
Sources:
Michael J. Morwood
University of New England
Department of Archaeology and Palaeoanthropology
New South Wales, 2351
Australia
Math enthusiast wins
Science Talent Search
The top winners in the 1998 Westinghouse Science Talent Search are students from Indiana, Arizona, and New York.
Sources:
J. Richard Gott
Princeton University
Department of Astrophysical Sciences
118 Peyton Hall
Princeton, NJ 08544
Stimulating clue hints how lithium works
New studies of lithiums effects on cells may help explain how the drug combats manic depression.
Sources:
De-Maw Chuang
National Institutes of Health
National Institute of Mental Health
Section on Molecular Neurobiology, Biological Psychiatry Branch
10 Center Drive, MSC 1272
Bethesda, MD 20892-1272Husseini K. Manji
Wayne State University
Department of Psychiatry
4201 St. Antoine, 5V DRH
Detroit, MI 48201
Craft finds evidence of ice on the moon
NASAs Lunar Prospector spacecraft has gathered the best evidence so far of frost deep within craters at the moons north and south poles.
Sources:
Paul D. Spudis
Lunar and Planetary Institute
3600 Bay Area Boulevard
Houston, TX 77058-1113
Cosmic rays sow the seeds of cloud growth
Atmospheric ions created by cosmic rays could play a role in creating the precursors to cloud droplets.
Sources:
David S. Covert
University of Washington
Department of Atmospheric Sciences
Seattle, WA 98195Richard P. Turco
University of California, Los Angeles
Department of Atmospheric Sciences
Los Angeles, CA 90095-1565
Timeless machine detects electric charge
A microscopic device based on an 18th century scientific instrument mechanically measures tiny amounts of electric charge.
Sources:
Theodore A. Fulton
Lucent Technologies
Bell Laboratories
Murray Hill, NJ 07974Michael L. Roukes
California Institute of Technology
Condensed Matter Physics 114-36
Pasadena, CA 91125
Website: http://www.cmp.caltech.edu/~roukes/
Nuclear collisions spawn odd fragments
Physicists report new evidence that fragments created in nuclear collisions sometimes travel unexpectedly short distances before decaying.
Sources:
Piyare L. Jain
High Energy Experimental Laboratory
Department of Physics
State University of New York at Buffalo
Buffalo, NY 14260William C. McHarris
Department of Chemistry
Michigan State University
East Lansing, MI 48823
Research Notes
Biology
Rattlesnakes feel the final bite
The sense of touch may play a role in the accuracy of rattlesnake strikes.
Sources:
William K. Hayes
Loma Linda University
Department of Natural Sciences
Loma Linda, CA 92350Kenneth Kardong
Washington State University
Department of Zoology
Pullman, WA 99164-4236
When the little guys win one
Small birds benefit from harassing big, dangerous predators.
Sources:
Keith L. Bildstein
Hawk Mountain Sanctuary
1700 Hawk Mountain Road
Kempton, PA 19529-9449Chris R. Pavey
University of Queensland
Department of Zoology
64 Arafura Street
Upper Mt. Gravatt
Brisbane 4122
Australia
Biomedicine
Heart benefits from sneaky calcium ions
Calcium ions may enter heart cells through an unexpected pathway.
Sources:
W. Jonathan Lederer
University of Maryland
School of Medicine
Departments of Molecular Biology and Biophysics and Physiology
Medical Biotechnology Center
725 West Lombard Street
Baltimore, MD 21201
Stopping coughs . . . and cancer?
A cough suppressant known as noscapine may also combat tumors.
Sources:
Keqiang Ye
Emory University School of Medicine
Departments of Anatomy and Cell Biology
Graduate Program in Biochemistry and Molecular Biology
Atlanta, GA 30322
Paleontology
Flat-footed fossil of former flyer
The remains of a Jurassic-aged pterosaur indicate these animals could not walk on their toes.
Sources:
James M. Clark
George Washington University
Department of Biological Sciences
Washington, DC 20052Kevin Padian
University of California, Berkeley
Department of Integrated Biology
Berkeley, CA 94720-3140
Dinosaur denizens of the dark
A duck-billed dinosaur has been discovered in Antarctica.
Sources:
Michael Woodburne
University of California, Riverside
Department of Earth Sciences
Riverside, CA 92521
Physics
Watching washes out interference
Increasing the ability of a detector to determine whether an electron has passed through one opening or another of a pair of narrow slits reduces the amount of quantum interference observed.
Sources:
Mordehai Heiblum
Braun Center for Submicron Research
Department of Condensed Matter Physics
Weizmann Institute of Science
Rehovot 76100
Israel
Frigid running
Interactions between electrons in a metal and those in another material may contribute to friction.
Sources:
Jacqueline Krim
Physics Department
Northeastern University
Boston, MA 02115
Articles:
Inner Strength
Gene therapy aims to build cells that thwart HIV replication
Intracellular immunization tests are stepping from animals to people.
Sources:
David Baltimore
California Institute of Technology
1200 East California Boulevard
Pasadena, CA 91125Larry A. Couture
Ribozyme Pharmaceuticals, Inc.
2950 Wilderness Place
Boulder, CO 80301Wayne A. Marasco
Harvard Medical School
Dana-Farber Cancer Institute
Divisions of Human Retrovirology and Infectious Diseases
44 Binney Street
Boston, MA 02115Richard A. Morgan
National Human Genome Research Institute
Clinical Gene Therapy Branch
Gene Transfer Technology Section
Building 10, Room 10C103
Bethesda, MD 20892-1851
Racing the Waves
Seismologists try to catch quake tremors quickly enough to save lives
A new network of earthquake sensors in southern California will soon provide information about quakes even before the shaking starts.
Sources:
James D. Goltz
California Institute of Technology
Seismological Laboratory, 252-21
Pasadena, CA 91125Egill Hauksson
California Institute of Technology
Seismological Laboratory, 252-21
Pasadena, CA 91125Lucille M. Jones
United States Geological Survey
525 South Wilson Avenue
Pasadena, CA 91106
copyright 1998 Science Service