Skip to main content

Thank you for visiting You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

Volume 613 Issue 7943, 12 January 2023

Carried away

The flow of sediment across deserts, through rivers or along coasts transports vast quantities of granular material over huge distances. Understanding the mechanics of this movement has a wide range of applications including river and coastal restoration, pollution mitigation and even understanding past and present climates on other worlds. But developing accurate models for sediment transport has proved challenging. In this week’s issue, Eric Deal and his colleagues reveal that although many models consider grain size, grain shape also exerts a significant influence on sediment movement and might account for differences between previous models and measurements. The researchers have developed a theory that accounts for the effects of grain shape on drag and friction. Having verified the theory in the lab, they propose a shape-corrected law for sediment transport that they believe will provide more accurate results for natural sediment grains.

Cover image: Kenny Williamson/Getty

This Week

Top of page ⤴

News in Focus

Top of page ⤴


Top of page ⤴


Top of page ⤴


  • News & Views

  • Articles

    • Two signals identified in short gamma-ray bursts from archival Burst and Transient Source Experiment data show kilohertz quasiperiodic oscillations, implying the ringing of a hypermassive neutron star before collapsing to a black hole.

      • Cecilia Chirenti
      • Simone Dichiara
      • Robert Preece
    • The authors measure elastic p-wave interaction energies in pairs of fermionic atoms occupying the lowest two orbitals of an optical lattice; isolation of individual pairs of atoms protects against three-body recombination, enabling a theoretical maximum of interaction energy to be achieved.

      • Vijin Venu
      • Peihang Xu
      • Joseph H. Thywissen
    • Placing monolayer tungsten diselenide on Bernal-stacked bilayer graphene promotes enhanced superconductivity, indicating that proximity-induced spin–orbit coupling plays a key role in stabilizing the pairing, paving the way for engineering tunable, ultra-clean graphene-based superconductors.

      • Yiran Zhang
      • Robert Polski
      • Stevan Nadj-Perge
    • An electrically driven motor on the molecular scale based on [3]catenane is described, in which two cyclobis(paraquat-p-phenylene) rings operate by means of redox reactions, demonstrating highly unidirectional movement around a circular loop.

      • Long Zhang
      • Yunyan Qiu
      • J. Fraser Stoddart
      Article Open Access
    • Analysis of a continuous record of water-isotope ratios from the West Antarctic Ice Sheet Divide ice core reveals a dominant role for annual maximum insolation in determining West Antarctic summer temperature during the Holocene.

      • Tyler R. Jones
      • Kurt M. Cuffey
      • James W. C. White
      Article Open Access
    • Theoretical and experimental analysis of the effect of grain shape in bed load sediment transport is performed and a shape-corrected sediment transport law that provides greater accuracy in predictions is proposed.

      • Eric Deal
      • Jeremy G. Venditti
      • J. Taylor Perron
    • Evolutionary analyses of single-nucleus transcriptome data for testes from 11 species are reported, illuminating the molecular evolution of spermatogenesis and associated forces, and providing a resource for investigating the testis across mammals.

      • Florent Murat
      • Noe Mbengue
      • Henrik Kaessmann
      Article Open Access
    • Infection of Caenorhabditis elegans by Pseudomonas aeruginosa causes an increased pheromone response via the pheromone receptor STR-44 and increases mating with males, a potential mechanism for promoting adaptation in the host.

      • Taihong Wu
      • Minghai Ge
      • Yun Zhang
    • A study reveals how land-use change and climate interact to drive the spillover of a zoonotic virus, and identifies an ecological mechanism that prevents spillover.

      • Peggy Eby
      • Alison J. Peel
      • Raina K. Plowright
      Article Open Access
    • We describe a human DNA methylome atlas based on deep whole-genome bisulfite sequencing, allowing fragment-level analysis of cell-type-specific markers and providing an essential resource for studies of gene regulation and for deconvolution of cell mixtures and liquid biopsies.

      • Netanel Loyfer
      • Judith Magenheim
      • Tommy Kaplan
      Article Open Access
    • Cryo-electron microscopy structures of Staphylococcus aureus BlaR1 reveal dynamic signalling states regulating broad spectrum β-lactam antibiotic resistance through cleavage of the transcriptional repressor BlaI and induced expression of the β-lactamase blaZ and the β-lactam-resistant cell-wall transpeptidase mecA.

      • J. Andrew N. Alexander
      • Liam J. Worrall
      • Natalie C. J. Strynadka
      Article Open Access
Top of page ⤴
Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing


Quick links