Contents
10 January 2020
Vol 367, Issue 6474
Vol 367, Issue 6474
Contents
This Week in Science
Editorial
Editors' Choice
Products & Materials
- New Products
A weekly roundup of information on newly offered instrumentation, apparatus, and laboratory materials of potential interest to researchers.
In Brief
In Depth
- Study disputes carbon dioxide-fish behavior link
Three-year effort fails to replicate alarming findings about effects of ocean acidification.
- Articles in ‘predatory’ journals receive few or no citations
Study counters fears that mediocre or misleading papers contaminate the literature.
- China delivers verdict on gene editing of babies
He Jiankui gets prison sentence, but legal proceedings fail to satisfy calls for transparency.
- How safe is a popular gene therapy vector?
Dog study suggests virus-delivered DNA can invade chromosomes near cancer genes.
- Russian academy probe triggers more than 800 retractions
Fraud commission's work causes "tension and conflict."
- In two-person MRI, brains socialize at close range
In pursuit of natural interactions, researchers push the limits of neuroimaging.
Feature
- Need for speed
Despite hype and technological hurdles, a hypersonic arms race is accelerating.
- In Russia, hypersonic rivalry feeds suspicions and arrests
Researchers face treason charges for sharing research.
Working Life
Letters
Books et al.
- People-powered discovery
A physicist reveals how citizen science is reshaping research
- Fun and games and ecosystems
Video games—even those without explicit educational goals—can offer insights into ecology
Policy Forum
- Waiting for data: Barriers to executing data use agreements
Delays stem from institutional factors and negotiating challenges, some of which appear amenable to reform
Perspectives
- Completing Wallace's journey
A global inventory of species diversity is critical for understanding the evolution of life on Earth
- Tolerance to antibiotics affects response
Bacterial tolerance to antibiotics reduces the ability to prevent resistance
- Improving cancer screening programs
Evaluating diagnostic tests in learning screening programs could improve public health
- Counting on Majorana modes
Quantized conductance is a prerequisite of a topologically robust Majorana qubit
- A sugary input to leucine sensing
Glucose channels the amino acid leucine into synthetic versus degradative pathways
- A younger “earliest human migration” to Southeast Asia
New dating suggests that hominids arrived at the Sangiran dome later than had been thought
- Flipping carbon monoxide on a salt surface
Advanced mid-infrared techniques identify orientational isomers
Retraction
Research Articles
- Dermal sheath contraction powers stem cell niche relocation during hair cycle regression
In mice, the hair follicle stem cell niche is relocated by the muscle-like contraction of the dermal sheath.
- A lost world in Wallacea: Description of a montane archipelagic avifauna
A suite of new bird species has been identified on remote islands near Sulawesi, Indonesia.
Reports
- Observation of hydrogen trapping at dislocations, grain boundaries, and precipitates
Cryogenic atom probe observations map hydrogen to a variety of interfaces, providing insight into hydrogen embrittlement.
- Observation of an isomerizing double-well quantum system in the condensed phase
Infrared spectra of CO on NaCl(100) elucidate the quantum nature of isomerization.
- Observation of the fastest chemical processes in the radiolysis of water
Ultrafast soft x-ray pulses capture the early-time dynamics in ionized liquid water.
- A terrestrial gamma-ray flash and ionospheric ultraviolet emissions powered by lightning
High-speed photometry shows that a terrestrial gamma-ray flash was generated by an intra-cloud lightning leader in a thunderstorm.
- Time-resolved observation of spin-charge deconfinement in fermionic Hubbard chains
Quantum gas microscopy is used to track spinons and holons in a 1D optical lattice filled with interacting 6Li atoms.
- Nearly quantized conductance plateau of vortex zero mode in an iron-based superconductor
Scanning tunneling spectroscopy is used to study the conductance of zero bias states in vortices on FeTe0.55Se0.45.
- Hydrophobic zeolite modification for in situ peroxide formation in methane oxidation to methanol
A catalyst system concentrates hydrogen peroxide and methane in close proximity for efficient methanol synthesis.
- Programmed cell death along the midline axis patterns ipsilaterality in gastrulation
Midline cell death establishes left–right body compartments in chick embryos.
- Effect of tolerance on the evolution of antibiotic resistance under drug combinations
When used in the clinic, antibiotic combination therapy needs to be applied cautiously if tolerance to one of the drugs has emerged.
- Glucose-dependent control of leucine metabolism by leucyl-tRNA synthetase 1
Leucine binding to leucyl-tRNA synthetase (LARS1) is controlled by phosphorylation of LARS1.
- Age control of the first appearance datum for Javanese Homo erectus in the Sangiran area
A combination of dating techniques resolves the arrival of Homo erectus in Indonesia at ~1.3 million years ago.
From the AAAS Office of Publishing
About The Cover
COVER An artist's impression of multiwavelength emission above a thunderstorm, based on data from the Atmosphere-Space Interactions Monitor on the International Space Station. The high electric field associated with lightning (light blue) generates a terrestrial gamma-ray flash (magenta). The resulting electromagnetic pulse causes an elve—an expanding ring of ultraviolet emission (red and white). See page 183.
Image: Birkeland Centre for Space Science, Daniel Schmelling/Mount Visual
