Sources:

Sources may not be available for all articles

Global Temperatures Spark Hot Debate

Errors may have crept into satellite-based measurements of global temperatures.

Sources:

James Hurrell
P.O. Box 3000
National Center for Atmospheric Research
Boulder, CO 80307

John Christy
Earth System Science Laboratory
University of Alabama
Huntsville, AL 35899

Picture of world forests pieced together

Of the world's original forests, only one-fifth remains as relatively large, undisturbed tracts.

Sources:

Dave Nielsen
World Resources Institute
1709 New York Avenue, N.W.
Washington, DC 20006

Does yo-yo dieting pose cancer threat?

An estrogen-mimicking pollutant is released from fat during periods of weight loss and may spur the growth of hormone-sensitive tumors.

Sources:

Robert M. Bigsby
Obstetrics/Gynecology Research Laboratories
1001 Walnut Street (MF 102)
Indiana University School of Medicine
Indianapolis, IN 46202-5196
E-mail: rbigsby@indyvax.iupui.edu

H. Leon Bradlow
Strang Cancer Research Center
Box 231
Rockefeller University
1230 York Avenue
New York, NY 10021

Devra Lee Davis
Program on Health, Environment & Development
World Resources Institute
1709 New York Avenue, N.W.
7th Floor
Washington, DC 20006

Helena Mussalo-Rauhamaa
Department of Dermatology and Allergic Diseases
Helsinki University Central Hospital
Meilantie
00250 Helsinki
Finland

Rosemary Steinmetz
Obstetrics/Gynecology Research Laboratories
1001 Walnut Street (MF 102)
Indiana University School of Medicine
Indianapolis, IN 46202-5196

Shape, not bonds may drive DNA synthesis

Contrary to what scientists had thought, the enzyme that synthesizes DNA seem to rely more on shape than on hydrogen bonds when matching up complementary bases.

Sources:

Ronald Breslow
Department of Chemistry
Columbia University
New York, NY 10027

Eric T. Kool
Department of Chemistry
University of Rochester
Rochester, NY 14627
E-mail: etk@etk.chem.rochester.edu
Website: http://kool.chem.rochester.edu

How fowl: Chickens that behave like quail

A researcher has transplanted developing brain cells from quail embryos into chicken embryos, creating chickens that reproduce some characteristics of quail crowing behavior.

Sources:

Evan Balaban
The Neurosciences Institute
10640 John Jay Hopkins Drive
San Diego, CA 92121

Mapping helium atoms' quantum states

Physicists have, for the first time, experimentally determined the quantum state of helium atoms passing through a pair of slits.

Sources:

Jurgen Mlynek
Fakultat fur Physik
Universitat Konstanz
Postfach 5560
D-78434 Konstanz
Germany

Christopher Monroe
Time and Frequency Division
National Institute of Standards and Technology
Boulder, CO 80303-3328

Ear infections now more widespread

Childhood middle-ear infections have become more entrenched, but researchers differ on how often black children suffer from bouts of the illness.

Sources:

Jerome Klein
Department of Pediatrics
Boston Medical Center
Boston, MA 02118

Bruce Lanphear
Department of Pediatrics
Rochester General Hospital
1425 Portland Avenue
Rochester, NY 14621

Jack L. Paradise
Children's Hospital of Pittsburgh
One Children's Place
Pittsburgh, PA 15213-2583

Top 10 winners in top science contest

High school students from New York, California, and Montana won top scholarships in the 56th annual Westinghouse Science Talent Search.

Sources:

Yvonne Tilghman
Science Service
1719 N Street, N.W.
Washington, DC 20036
E-mail: youth@scisvc.org

Research Note:

Biomedicine:

Certain foods influence diabetes risk

Women who eat little cereal fiber and a lot of carbohydrate-rich foods increase their chance of developing diabetes to 2.5 times the normal rate.

Sources:

Jorge Salmeron
Channing Laboratory
182 Longwood Avenue
Boston, MA 02115

Stubborn digitalis debate continues

Sources:

Richard Gorelin
Mount Sinai Medical Center
Box 1018
Gustave Levy Place
New York, NY 10029-6574

Milton Packer
Columbia University
College of Physicians and Surgeons
630 W. 168th Street
New York, NY 10032

Articles:

Running on One-Third Empty

Primates on a low-cal diet are in a metabolic slow lane, perhaps to longer life

Metabolism -- particularly glucose use -- is central to the aging process.

Sources:

Jay R. Kaplan
Bowman Gray School of Medicine
Wake Forest University
Winston-Salem, NC 27157

Joseph W. Kemnitz
Wisconsin Regional Primate Center
University of Wisconsin
Madison, WI 53715

Mark A. Lane
Gerontology Research Center
National Institute on Aging
National Institutes of Health
Hopkins Bayview Research Campus
4940 Eastern Avenue
Baltimore, MD 21224

A Fresh Look at Vintage Photos

Exhibit classes science images by visual characteristics

About 100 of the photos sent out by Science Service's news syndicate from the 1920s to 1960s will be on display from March 28 to June 22 at the International Center for Photography in New York.