Editor summaries of this week's papers.

Highlights of the recent literature.

In science news around the world, the Canadian government announces a $1.36 billion research fund, the U.S. Fish and Wildlife Service plans to crack down on ivory and rhino horn sales, and more.

With help from a group of cheerleaders, Project MERCCURI will send microbes collected from sports stadiums around the United States to duke it out in a microbial Super Bowl aboard the International Space Station.

Patrick Gallagher steps down as head of the National Institute of Standards and Technology to become chancellor of the University of Pittsburgh. And Russian Academy of Sciences President Vladimir Fortov talks with Science about the academy's recent restructuring.

Catch up on science highlights from the 2014 AAAS annual meeting in Chicago, Illinois, and read some of our favorite attendee responses to "What's the Coolest Science Fact You Know?"

A new analysis of the way galaxies are distributed through space suggests that some of the universe's dark matter may consist of hitherto undiscovered particles known as sterile neutrinos.

An experimental technique that manipulates a woman's DNA could spare her from passing on a potentially deadly disease to her children, but the technique breaks new and ethically fraught ground.

While one sequencing company breaks the $1000 genome barrier with high-end machines, another takes the first steps toward cheap, hand-held sequencers.

U.S. scientists working in Antarctica continue to feel the negative effects of last fall's government shutdown.

Researchers now have hard evidence that the circulation that helps warm the North Atlantic did indeed abruptly slow or perhaps even stop for centuries at a time more than 100,000 years ago.

In the coming months on two mountaintops in Chile, two new state-of-the-art instruments—the North American Gemini Planet Imager and the European SPHERE—will start scanning the skies for planets around other stars.

Researchers are collecting terabytes of recordings, from bird chirps to chainsaw roars. The emerging field of soundscape ecology has a lot to offer … and a lot to prove.

Canfield intertwines accounts of oxygen in Earth's atmosphere through time and the means by which researchers have charted this history.

Ceccarelli explores the uses and effects of the metaphor "frontier of science."

A listing of books received at Science during the week ending 14 February 2014.

Community-based management, ecotourism, and researchers' presence are proposed to prevent lemur extinctions.

Analyses of past observations help to predict the human contribution to future climate change.

Twisted fibers provide a simple, low-cost route to high-energy artificial muscles. [Also see Report by Haines et al.]

A newly discovered population of neurons called island cells may be important signaling hubs within neural microcircuits for memory. [Also see Reports by Ray et al. and Kitamura et al.]

Cellular extensions called cytonemes may allow nonneuronal cells to communicate directly with each other over long distances. [Also see Research Article by Roy et al.]

The structure of a flavirirus nonstructural protein provides mechanistic understanding for many of its functions. [Also see Report by Akey et al.]

A rhodium-catalyzed reaction places a silicon substituent on the site farthest away from the largest group present on an aromatic ring. [Also see Research Article by Cheng and Hartwig]

Transfer of signaling proteins along long filopodia is required for proper development in the fruit fly. [Also see Perspective by Rørth]

A catalyst that adds silyl groups to specific sites on aryl rings could streamline synthesis of pharmaceutical intermediates. [Also see Perspective by Tobisu and Chatani]

Cholinergic activation of somatostatin-positive hippocampal CA1 interneurons promotes fear-context associations.

Angle-resolved photoemission spectroscopy is used to detect bulk Dirac cones in a three-dimensional analog of graphene.

Polymer fibers can be transformed into highly efficient artificial muscles through the application of extreme twist. [Also see Perspective by Yuan and Poulin]

Addition of a thermoresponsive component to a hydrogel counters its tendency to swell and improves its mechanical properties.

Transcription factor binding sites form connected networks.

An integral membrane enzyme active site opens laterally to the lipid bilayer to facilitate catalysis inside the membrane.

The structure of a viral protein provides a basis for understanding its function and could guide vaccine development. [Also see Perspective by Shi]

A strategy to engineer tissues uses substantially lower growth factor levels without compromising tissue viability.

Detection of a core brain region for performance monitoring and error detection in humans is shown.

Looking at the entorhinal cortex in tangential sections reveals calbindin-immunopositive neurons arranged in a hexagonal grid. [Also see Perspective by Blair]

A distinct set of excitatory neurons in the entorhinal cortex projects directly to specific interneurons in the hippocampus. [Also see Perspective by Blair]

This week's show features a segment on the science of soundscapes and a roundup of shorts from our daily news site.

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