Science Magazine
Would everyone wearing face masks help us slow the pandemic?  Science Magazine · 1 day
Some argue that masking everyone would slow the spread of COVID-19—but the evidence is spotty more
Not wearing masks to protect against coronavirus is a ‘big mistake,’ top Chinese scientist says  Science Magazine · 2 days
George Gao, head of the Chinese Center for Disease Control and Prevention, offers insights from the front more
New coronavirus leaves pregnant women with wrenching choices—but little data to guide them  Science Magazine · 2 days
Parents and doctors must decide whether the benefits of breastfeeding outweigh the risks of possible infection more
How sick will the coronavirus make you? The answer may be in your genes  Science Magazine · 2 days
Projects drawing on large biobanks and COVID-19 patients aim to find genetic differences that predict who will get seriously ill... more
Identification of a nerve-associated, lung-resident interstitial macrophage subset with distinct localization and immunoregulatory properties  Science Magazine · 2 days
Tissue-resident macrophages are a diverse population of cells that perform specialized functions including sustaining tissue homeostasis and tissue surveillance. Here,... more
MAP4K4 negatively regulates CD8 T cell-mediated antitumor and antiviral immunity  Science Magazine · 2 days
During cytotoxic T cell activation, lymphocyte function-associated antigen–1 (LFA-1) engages its ligands on antigen-presenting cells (APCs) or target cells to enhance T cell priming or lytic activity. Inhibiting... more
Extreme cavity expansion in soft solids: Damage without fracture  Science Magazine · 2 days
Cavitation is a common damage mechanism in soft solids. Here, we study this using a phase separation technique in stretched, elastic solids to controllably nucleate and grow small cavities by... more
Nonreciprocal transport in gate-induced polar superconductor SrTiO3  Science Magazine · 2 days
Polar conductors/superconductors with Rashba-type spin-orbit interaction are potential material platforms for quantum transport and spintronic functionalities. One of their inherent properties is the nonreciprocal transport, where the rightward and leftward currents become inequivalent, reflecting... more
Twist again: Dynamically and reversibly controllable chirality in liquid crystalline elastomer microposts  Science Magazine · 2 days
Photoresponsive liquid crystalline elastomers (LCEs) constitute ideal actuators for soft robots because their light-induced macroscopic shape changes can be harnessed to perform specific articulated... more
Ultra-large electric field-induced strain in potassium sodium niobate crystals  Science Magazine · 2 days
Electromechanical coupling in piezoelectric materials allows direct conversion of electrical energy into mechanical energy and vice versa. Here, we demonstrate lead-free (KxNa1–x)NbO3 single crystals with an ultrahigh large-signal piezoelectric coefficient... more
Four-wave mixing of topological edge plasmons in graphene metasurfaces  Science Magazine · 2 days
We study topologically protected four-wave mixing (FWM) interactions in a plasmonic metasurface consisting of a periodic array of nanoholes in a graphene sheet, which exhibits a wide topological bandgap at... more
Two-photon quantum interference and entanglement at 2.1 {mu}m  Science Magazine · 2 days
Quantum-enhanced optical systems operating within the 2- to 2.5-μm spectral region have the potential to revolutionize emerging applications in communications, sensing, and metrology. However, to date, sources of entangled photons have been... more
High-frequency rectification via chiral Bloch electrons  Science Magazine · 2 days
Rectification is a process that converts electromagnetic fields into a direct current. Such a process underlies a wide range of technologies such as wireless communication, wireless charging, energy harvesting, and infrared detection. Existing rectifiers are mostly... more
Three dimensions, two microscopes, one code: Automatic differentiation for x-ray nanotomography beyond the depth of focus limit  Science Magazine · 2 days
Conventional tomographic reconstruction algorithms assume that one has obtained pure projection images, involving no... more
A novel physical mechanism of liquid flow slippage on a solid surface  Science Magazine · 2 days
Viscous liquids often exhibit flow slippage on solid walls. The occurrence of flow slippage has a large impact on the liquid transport and the... more
Generation of multiple ultrastable optical frequency combs from an all-fiber photonic platform  Science Magazine · 2 days
Frequency-stabilized optical frequency combs have created many high-precision applications. Accurate timing, ultralow phase noise, and narrow linewidth are prerequisites for achieving the ultimate performance... more
Mitigating cavitation erosion using biomimetic gas-entrapping microtextured surfaces (GEMS)  Science Magazine · 2 days
Cavitation refers to the formation and collapse of vapor bubbles near solid boundaries in high-speed flows, such as ship propellers and pumps. During this process, cavitation bubbles focus fluid energy... more
Chiral superconductivity in the alternate stacking compound 4Hb-TaS2  Science Magazine · 2 days
Van der Waals materials offer unprecedented control of electronic properties via stacking of different types of two-dimensional materials. A fascinating frontier, largely unexplored, is the stacking of strongly correlated phases of matter.... more
Chemical boundary engineering: A new route toward lean, ultrastrong yet ductile steels  Science Magazine · 2 days
For decades, grain boundary engineering has proven to be one of the most effective approaches for tailoring the mechanical properties of metallic materials, although... more
Atomic-scale insights into the interfacial instability of superlubricity in hydrogenated amorphous carbon films  Science Magazine · 2 days
The origin of instability or even disappearance of the superlubricity state in hydrogenated amorphous carbon (a-C:H) film in the presence of oxygen... more
Cooperative deformation in high-entropy alloys at ultralow temperatures  Science Magazine · 2 days
High-entropy alloys exhibit exceptional mechanical properties at cryogenic temperatures, due to the activation of twinning in addition to dislocation slip. The coexistence of multiple deformation pathways raises an important question regarding how... more
Targeted gene silencing in vivo by platelet membrane-coated metal-organic framework nanoparticles  Science Magazine · 2 days
Small interfering RNA (siRNA) is a powerful tool for gene silencing that has been used for a wide range of biomedical applications, but there are many... more
Light-triggered topological programmability in a dynamic covalent polymer network  Science Magazine · 2 days
Dynamic covalent polymer networks exhibit unusual adaptability while maintaining the robustness of conventional covalent networks. Typically, their network topology is statistically nonchangeable, and their material properties are therefore nonprogrammable. By... more
Demonstration of a third-order hierarchy of topological states in a three-dimensional acoustic metamaterial  Science Magazine · 2 days
Classical wave systems have constituted an excellent platform for emulating complex quantum phenomena, such as demonstrating topological phenomena in photonics and acoustics.... more
Physicists brawl over new dark matter claim  Science Magazine · 3 days
Observations nix the idea that the elusive substance is made of sterile neutrinos—or do they? more
Topological funneling of light  Science Magazine · 3 days
Dissipation is a general feature of non-Hermitian systems. But rather than being an unavoidable nuisance, non-Hermiticity can be precisely controlled and, hence, used for sophisticated applications such as optical sensors with enhanced sensitivity. In our work, we implement a non-Hermitian... more
Efficient, stable silicon tandem cells enabled by anion-engineered wide-bandgap perovskites  Science Magazine · 3 days
Maximizing the power conversion efficiency (PCE) of perovskite-silicon tandem solar cells that can exceed the Shockley-Queisser single-cell limit requires a high performing, stable perovskite top cell with a... more
Unconstrained genome targeting with near-PAMless engineered CRISPR-Cas9 variants  Science Magazine · 3 days
Manipulation of DNA by CRISPR-Cas enzymes requires the recognition of a protospacer adjacent motif (PAM), limiting target site recognition to a subset of sequences. To remove this constraint, we engineered variants of... more
Structure of a trapped radical transfer pathway within a ribonucleotide reductase holocomplex  Science Magazine · 3 days
Ribonucleotide reductases (RNRs) are a diverse family of enzymes that are alone capable of generating 2'-deoxynucleotides de novo and are thus critical in DNA... more
Transcription polymerase-catalyzed emergence of novel RNA replicons  Science Magazine · 3 days
Transcription polymerases can exhibit an unusual mode of regenerating certain RNA templates from RNA, yielding systems that can replicate and evolve with RNA as information carrier. Two classes of pathogenic RNAs (Hepatitis delta virus... more
Flux-induced topological superconductivity in full-shell nanowires  Science Magazine · 3 days
Hybrid semiconductor-superconductor nanowires have emerged as a promising platform for realizing topological superconductivity (TSC). Here, we present a route to TSC using magnetic flux applied to a full superconducting shell surrounding a semiconducting nanowire core. Tunneling... more
The historical roots of economic development  Science Magazine · 3 days
This article reviews an emerging area of research within economics that seeks to better understand contemporary economic outcomes by taking a historical perspective. The field has established that many of the contemporary differences in comparative economic... more
Viral video advises washing fruit and vegetables with soap. Here's why that's a bad idea.
Why police will be crucial players in the battle against coronavirus
Financial, economic actions during crisis may be rational, if not ethical
A device for the early detection of certain eyesight problems
Cellular train track deformities shed light on neurological disease
SLAC structural biologist discovers a strange cavity in key tuberculosis protein
Earth from Space: Rice fields, Vietnam
Wildfire perceptions largely positive after hiking in a burned landscape
Can a single ventilator support 4 patients? Doctors think idea just might work.
As the ocean warms, marine species relocate toward the poles: study