07 October 2011
Vol 334, Issue 6052
  • Contents

    • This Week in Science

    • Editorial

    • Editors' Choice

    • Podcasts

      • Science Podcast

        The show includes climate change and species distributions, pulsar gamma ray emissions, the case for 'the Anthropocene,' and more.

    • Products & Materials

      • New Products

        A weekly roundup of information on newly offered instrumentation, apparatus, and laboratory materials of potential interest to researchers.

    • News of the Week

      • Around the World

        In science news around the world this week, Germany returned 20 colonial-era skulls to Namibia, Canada's top court has ruled to keep an injecting drug use site open, Japan's ministry of education wants to boost overall science-related spending next year while reducing spending on nuclear-related research, the inhabitants of the Faroe Islands could become the world's first fully sequenced population, a new branch of Jackson Lab will be built in Connecticut, a House bill would boost NIH's 2012 budget by 3.3%, and the Republic of the Marshall Islands declared its waters off-limits to shark fishing and banned the import and export of shark products.

      • Random Sample

        Science's daily online news site ScienceNOW turns 15 this week. A 25-year struggle to sell genetically engineered "blue" roses in the United States took a big step forward last week. Right-wing Italians seem to naturally track the gaze of those in power, says a social neuroscientist. And this week's numbers quantify the air miles of the average astronomer and the thickness of snow on parts of Saturn's moon Enceladus.

      • Newsmakers

        This week's Newsmakers are a group of scientists who have squeezed a reproduction of the entire periodic table onto a human hair; Darryl Gwynne and David Rentz, who have won a 2011 Ig Nobel Prize for their study of beetles that mate with beer bottles; and Judy Mikovits, champion of the controversial theory that XMRV, a mouse retrovirus, had links to chronic fatigue syndrome, who was fired on 29 September.

    • Findings

    • News & Analysis

      • Human Cells Cloned—Almost

        Researchers have found a way to use human oocytes to reprogram adult cells, allowing them to form early embryos that can give rise to embryonic stem cells.

      • Where Do Human Eggs Come From?

        A steady supply of healthy human oocytes allowed one lab to set up a systematic study of human nuclear transfer, which has now brought scientists significantly closer to understanding why most attempts have so far failed.

      • Curious Cosmic Speed-Up Nabs Nobel Prize

        Three researchers will share the Nobel Prize in physics for the dramatic observation that the universe's expansion is speeding up, which has changed the conceptual landscape in cosmology, astronomy, and particle physics.

    • News Focus

      • An Epoch Debate

        There's no dispute that humans are leaving their mark on the planet, but geologists and other scientists are debating whether this imprint is distinctive and enduring enough to designate a new epoch: the Anthropocene.

      • A Sign of Our Times

        When did the Anthropocene begin? Many human-driven planetary changes have their roots in the industrial revolution, but some think the marker should be set at 1945, when radioactive nuclei were first introduced into the environment.

    • Letters

    • Books et al.

    • Policy Forum

    • Perspectives

    • Research Article

    • Reports

      • Universal Digital Quantum Simulation with Trapped Ions

        A series of trapped calcium ions was used to simulate the complex dynamics of an interacting spin system.

      • Detection of Pulsed Gamma Rays Above 100 GeV from the Crab Pulsar

        This detection constrains the mechanism and emission region of gamma-ray radiation in the pulsar’s magnetosphere.

      • Dispersible Exfoliated Zeolite Nanosheets and Their Application as a Selective Membrane

        Thin zeolite films prepared through a polymer exfoliation method were used as selective membranes.

      • Adaptation to Climate Across the Arabidopsis thaliana Genome

        Alleles that are under selection in Arabidopsis serve as genetic markers that can be used to predict local adaptation.

      • The Shaping of Modern Human Immune Systems by Multiregional Admixture with Archaic Humans

        Viral defense and embryo implantation mechanisms have been shaped by contributions from Neandertal and Denisovan genes.

      • An Aboriginal Australian Genome Reveals Separate Human Dispersals into Asia

        Whole-genome data indicate that early modern humans expanded into Australia 62,000 to 75,000 years ago.

      • Linking Long-Term Dietary Patterns with Gut Microbial Enterotypes

        The basic composition of the human gut microbiome is influenced by long-term diet: high fat and protein versus high fiber.

    • From the AAAS Office of Publishing and Member Services

About The Cover

Cover image expansion

COVER Scanning electron microscope image of a strand of hair (about 80 micrometers wide) from the Aboriginal Australian whose genome was sequenced. The genomic sequence provides evidence for multiple dispersals into Asia of modern humans. See P. 94. Image: Courtesy of Timothy P. Topper, Natural History Museum of Denmark.