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Disponibilidad
Institución detectada Período Navegá Descargá Solicitá
No detectada desde mar. 1997 / hasta dic. 2023 Science Journals

Información

Tipo de recurso:

revistas

ISSN impreso

0036-8075

ISSN electrónico

1095-9203

Editor responsable

American Association for the Advancement of Science (AAAS)

País de edición

Estados Unidos

Fecha de publicación

Cobertura temática

Tabla de contenidos

Matters of Scale

Brian J. McGill

<jats:p>Recognition of the scale dependence of ecological processes helps explain the distribution and abundance of organisms.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 575-576

Hidden Growth of Supermassive Black Holes in Galaxy Mergers

Joel Primack

<jats:p>Changes in the fraction of quasars hidden by gas and dust over cosmic time helps confirm models of the evolution and merger rates of galaxies.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 576-578

Cooperation and Punishment

Louis Putterman

<jats:p>Punishment can support cooperative behavior in a group, but requires coordination.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 578-579

Chimpanzee Technology

William C. McGrew

<jats:p>Chimpanzees are the only nonhuman animal species known to make and use a wide range of complex tools.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 579-580

Biological Systems Theory

Jeremy Gunawardena

<jats:p>The robustness of a biochemical network can be inferred mathematically from its architecture.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 581-582

The Road Ahead for Metamaterials

Nikolay I. Zheludev

<jats:p>Metamaterials enable us to design our own “atoms” and thus create materials with new properties and functions.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 582-583

The ChemCollective—Virtual Labs for Introductory Chemistry Courses

David Yaron; Michael Karabinos; Donovan Lange; James G. Greeno; Gaea Leinhardt

<jats:p>A collection of online activities emphasizes the design and interpretation of experiments.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 584-585

AAAS News and Notes

<jats:p> A monthly roundup of recent news and projects of <jats:italic>Science</jats:italic> 's publisher, the American Association for the Advancement of Science. </jats:p>

Palabras clave: Multidisciplinary.

Pp. 586-586

The Origins of C 4 Grasslands: Integrating Evolutionary and Ecosystem Science

Erika J. Edwards; Colin P. Osborne; Caroline A. E. Strömberg; Stephen A. Smith; William J. Bond; Pascal-Antoine Christin; Asaph B. Cousins; Melvin R. Duvall; David L. Fox; Robert P. Freckleton; Oula Ghannoum; James Hartwell; Yongsong Huang; Christine M. Janis; Jon E. Keeley; Elizabeth A. Kellogg; Alan K. Knapp; Andrew D. B. Leakey; David M. Nelson; Jeffery M. Saarela; Rowan F. Sage; Osvaldo E. Sala; Nicolas Salamin; Christopher J. Still; Brett Tipple;

<jats:title>Grassland Emergence</jats:title> <jats:p> The evolution of the C <jats:sub>4</jats:sub> photosynthetic pathway from the ancestral C <jats:sub>3</jats:sub> pathway in grasses led to the establishment of grasslands in warm climates during the Late Miocene (8 to 3 million years ago). This was a major event in plant evolutionary history, and their high rates of foliage production sustained high levels of herbivore consumption. The past decade has seen significant advances in understanding C <jats:sub>4</jats:sub> grassland ecosystem ecology, and now a wealth of data on the geological history of these ecosystems has accumulated and the phylogeny of grasses is much better known. <jats:bold> Edwards <jats:italic>et al.</jats:italic> </jats:bold> (p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" page="587" related-article-type="in-this-issue" vol="328" xlink:href="10.1126/science.1177216">587</jats:related-article> ) review this multidisciplinary research area and attempt to synthesize emerging knowledge about the evolution of grass species within the context of plant and ecosystem ecology. </jats:p>

Palabras clave: Multidisciplinary.

Pp. 587-591

Mutations in DCC Cause Congenital Mirror Movements

Myriam Srour; Jean-Baptiste Rivière; Jessica M. T. Pham; Marie-Pierre Dubé; Simon Girard; Steves Morin; Patrick A. Dion; Géraldine Asselin; Daniel Rochefort; Pascale Hince; Sabrina Diab; Naser Sharafaddinzadeh; Sylvain Chouinard; Hugo Théoret; Frédéric Charron; Guy A. Rouleau

<jats:p>Humans who display involuntary symmetrical limb movements carry mutations in a gene required for nerve growth across the midline.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 592-592