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Uniquely preserved gut contents illuminate trilobite palaeophysiology

mercredi 27 septembre 2023 par Petr Kraft, Valéria Vaškaninová, Michal Mergl, Petr Budil, Old?ich Fatka, Per E. Ahlberg

Nature, Published online: 27 September 2023; doi:10.1038/s41586-023-06567-7Fossilized gut contents of an Ordovician trilobite shed light on the feeding habits of one of the most common and well-known extinct arthropods.

Nature

Weather explains the decline and rise of insect biomass over 34 years

mercredi 27 septembre 2023 par Jörg Müller, Torsten Hothorn, Ye Yuan, Sebastian Seibold, Oliver Mitesser, Julia Rothacher, Julia Freund, Clara Wild, Marina Wolz, Annette Menzel

Nature, Published online: 27 September 2023; doi:10.1038/s41586-023-06402-zInsect biomass data covering 27 years were reanalysed using sample-specific information on weather conditions during sampling and weather anomalies during the insect life cycle, finding that biomass is driven by complex (...)

Nature

Seasonal advance of intense tropical cyclones in a warming climate

mercredi 27 septembre 2023 par Kaiyue Shan, Yanluan Lin, Pao-Shin Chu, Xiping Yu, Fengfei Song

Nature, Published online: 27 September 2023; doi:10.1038/s41586-023-06544-0We identify a seasonal advance of intense tropical cyclones that is closely related to the seasonal advance of rapid intensification events, favoured by the observed earlier onset of favourable oceanic (...)

Nature

The geography of climate and the global patterns of species diversity

mercredi 27 septembre 2023 par Marco Túlio P. Coelho, Elisa Barreto, Thiago F. Rangel, José Alexandre F. Diniz-Filho, Rafael O. Wüest, Wilhelmine Bach, Alexander Skeels, Ian R. McFadden, David W. Roberts, Loïc Pellissier, Niklaus E. Zimmermann, Catherine H. Graham

Nature, Published online: 27 September 2023; doi:10.1038/s41586-023-06577-5Nearly 90% of global variation in species richness of birds, mammals, amphibians and reptiles is shown to be explained by the joint effects of climate and the geographic structure (area and isolation) of (...)

Nature

A quantum engine in the BEC–BCS crossover

mercredi 27 septembre 2023 par Jennifer Koch, Keerthy Menon, Eloisa Cuestas, Sian Barbosa, Eric Lutz, Thomás Fogarty, Thomas Busch, Artur Widera

Nature, Published online: 27 September 2023; doi:10.1038/s41586-023-06469-8This study reports the creation of a model thermodynamic engine that is fuelled by the energy difference resulting from changing the statistics of a quantum gas from bosonic to (...)

Nature

Electrically driven organic laser using integrated OLED pumping

mercredi 27 septembre 2023 par Kou Yoshida, Junyi Gong, Alexander L. Kanibolotsky, Peter J. Skabara, Graham A. Turnbull, Ifor D. W. Samuel

Nature, Published online: 27 September 2023; doi:10.1038/s41586-023-06488-5An electrically driven organic semiconductor laser is achieved by integrating a device structure that efficiently couples an organic light-emitting diode, with extremely high internal-light generation, with a polymer (...)

Nature

Inactivation of the Kv2.1 channel through electromechanical coupling

mercredi 27 septembre 2023 par Ana I. Fernández-Mariño, Xiao-Feng Tan, Chanhyung Bae, Kate Huffer, Jiansen Jiang, Kenton J. Swartz

Nature, Published online: 27 September 2023; doi:10.1038/s41586-023-06582-8The exploration of voltage-gated potassium channels using cryo-electron microscopy and electrophysiology identifies a mechanism of inactivation involved in regulating neuron (...)

Nature

Transposon-encoded nucleases use guide RNAs to promote their selfish spread

mercredi 27 septembre 2023 par Chance Meers, Hoang C. Le, Sanjana R. Pesari, Florian T. Hoffmann, Matt W. G. Walker, Jeanine Gezelle, Stephen Tang, Samuel H. Sternberg

Nature, Published online: 27 September 2023; doi:10.1038/s41586-023-06597-1TnpB and IscB nucleases use transposon-encoded guide RNAs to target genomic sequences for cleavage, thereby favouring copying and spreading of transposable (...)

Nature

A bioelectrical phase transition patterns the first vertebrate heartbeats

mercredi 27 septembre 2023 par Bill Z. Jia, Yitong Qi, J. David Wong-Campos, Sean G. Megason, Adam E. Cohen

Nature, Published online: 27 September 2023; doi:10.1038/s41586-023-06561-zThe first heartbeat of a zebrafish was captured, and development of cardiac excitability and conduction around this singular event were analysed, showing how development of single-cell properties produces a transition (...)

Nature

Earth’s early continental crust formed from wet and oxidizing arc magmas

mercredi 27 septembre 2023 par Rong-Feng Ge, Simon A. Wilde, Wen-Bin Zhu, Xiao-Lei Wang

Nature, Published online: 27 September 2023; doi:10.1038/s41586-023-06552-0The use of two zircon oxybarometers to simultaneously determine fO2 and H2O contents shows that Archaean granitoids were mostly formed from relatively oxidizing and H2O-rich magmas, probably at ancient subduction (...)

Nature