Evolution

EVOLUTION: Running Out of New States

Stephen J. Simpson and Andrew M. Sugden
Science Jun 23 2000: 2099.
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HISTORY OF SCIENCE:
Battlefield Sociobiology

Alison Jolly
Science Jun 23 2000: 2137.
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Ecology

Trial Balloon

Science Jun 23 2000: 2109.
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Reviving the Dead Zone

Science Jun 23 2000: 2111.
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GREENHOUSE WARMING:
Dueling Models: Future U.S. Climate Uncertain

Richard A. Kerr
Science Jun 23 2000: 2113.
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ECOLOGY:
China's Forest Policy for the 21st Century

Peichang Zhang, Guofan Shao, Guang Zhao, Dennis C. Le Master, George R. Parker, John B. Dunning Jr., and Qinglin Li
Science Jun 23 2000: 2135-2136.
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Botany

BOTANY:
Voluminous, Varied, and Vital

Natasha V. Raikhel
Science Jun 23 2000: 2138.
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Immunology

Gut Reaction

Science Jun 23 2000: 2093.
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Choosing a Helper

Science Jun 23 2000: 2093.
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Africa Boosts AIDS Vaccine R&D

Jon Cohen
Science Jun 23 2000: 2165-2167.
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Role of the Guanosine Triphosphatase Rac2 in T Helper 1 Cell Differentiation

Baiyong Li, Hong Yu, Wei-ping Zheng, Reinhard Voll, Songqing Na, Andrew W. Roberts, David A. Williams, Roger J. Davis, Sankar Ghosh, and Richard A. Flavell
Science Jun 23 2000: 2219-2222.
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A Primitive T Cell-Independent Mechanism of Intestinal Mucosal IgA Responses to Commensal Bacteria

Andrew J. Macpherson, Dominique Gatto, Elizabeth Sainsbury, Gregory R. Harriman, Hans Hengartner, and Rolf M. Zinkernagel
Science Jun 23 2000: 2222-2226.
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Epidemiology

Is AIDS in Africa a Distinct Disease?

Jon Cohen
Science Jun 23 2000: 2153-2155.
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Physical Sciences

Astronomy

ASTRONOMY:
Researchers Get Spectrum Bands

Gary Taubes
Science Jun 23 2000: 2107-2109.
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AMERICAN ASTRONOMICAL SOCIETY MEETING:
Cool Comets, Barren Clusters, and a Maxed-Out Universe

Robert Irion
Science Jun 23 2000: 2121-2124.
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Chemistry

Bent-Core Liquid Crystals

Science Jun 23 2000: 2093.
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Making Stronger Polymers

Science Jun 23 2000: 2093.
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CHEMISTRY: About Face

Phil D. Szuromi
Science Jun 23 2000: 2097.
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LIQUID CRYSTALS:
New Banana Phases

Tom C. Lubensky
Science Jun 23 2000: 2146-2147.
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An Orientational Transition of Bent-Core Molecules in an Anisotropic Matrix

R. Pratibha, N. V. Madhusudana, and B. K. Sadashiva
Science Jun 23 2000: 2184-2187.
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High-Strength Welds in Metallocene Polypropylene/Polyethylene Laminates

Kimberly A. Chaffin, Jeffrey S. Knutsen, Patrick Brant, and Frank S. Bates
Science Jun 23 2000: 2187-2190.
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Physics

LIQUID CRYSTALS:
New Banana Phases

Tom C. Lubensky
Science Jun 23 2000: 2146-2147.
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