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From primordial clocks to circadian oscillators

mercredi 22 mars 2023 par Warintra Pitsawong, Ricardo A. P. Pádua, Timothy Grant, Marc Hoemberger, Renee Otten, Niels Bradshaw, Nikolaus Grigorieff, Dorothee Kern

Nature, Published online: 22 March 2023; doi:10.1038/s41586-023-05836-9X-ray, cryo-EM and kinetic studies of the circadian oscillator KaiBC from the photosynthetic bacterium Rhodobacter sphaeroides shed light on the evolution of self-regulating (...)

Nature

Black holes up close

mercredi 22 mars 2023 par Ramesh Narayan, Eliot Quataert

Nature, Published online: 22 March 2023; doi:10.1038/s41586-023-05768-4The current observations and understanding of black holes is reviewed, and the future of the field of black-hole astrophysics is discussed.

Nature

Gut enterochromaffin cells drive visceral pain and anxiety

mercredi 22 mars 2023 par James R. Bayrer, Joel Castro, Archana Venkataraman, Kouki K. Touhara, Nathan D. Rossen, Ryan D. Morrie, Jessica Maddern, Aenea Hendry, Kristina N. Braverman, Sonia Garcia-Caraballo, Gudrun Schober, Mariana Brizuela, Fernanda M. Castro Navarro, Carla Bueno-Silva, Holly A. Ingraham, Stuart M. Brierley, David Julius

Nature, Published online: 22 March 2023; doi:10.1038/s41586-023-05829-8Visceral pain and anxiety in mice are found to be associated with gut enterochromaffin cells, and genetic models for eliciting visceral hypersensitivity and studying the sex bias of gut pain are (...)

Nature

Dense reinforcement learning for safety validation of autonomous vehicles

mercredi 22 mars 2023 par Shuo Feng, Haowei Sun, Xintao Yan, Haojie Zhu, Zhengxia Zou, Shengyin Shen, Henry X. Liu

Nature, Published online: 22 March 2023; doi:10.1038/s41586-023-05732-2An intelligent environment has been developed for testing the safety performance of autonomous vehicles and its effectiveness has been demonstrated for highway and urban test tracks in an augmented-reality (...)

Nature

Acceleration of 1I/‘Oumuamua from radiolytically produced H₂ in H₂O ice

mercredi 22 mars 2023 par Jennifer B. Bergner, Darryl Z. Seligman

Nature, Published online: 22 March 2023; doi:10.1038/s41586-022-05687-wAcceleration of ‘Oumuamua is due to the release of entrapped molecular hydrogen formed through energetic processing of an H2O-rich icy body, supporting the idea that it originated as a planetesimal relic similar to Solar (...)

Nature

Structural basis of mitochondrial membrane bending by the I–II–III₂–IV₂ supercomplex

mercredi 22 mars 2023 par Alexander Mühleip, Rasmus Kock Flygaard, Rozbeh Baradaran, Outi Haapanen, Thomas Gruhl, Victor Tobiasson, Amandine Maréchal, Vivek Sharma, Alexey Amunts

Nature, Published online: 22 March 2023; doi:10.1038/s41586-023-05817-yA supercomplex comprising all four respiratory chain components contributes to the induction of mitochondrial membrane curvature and tubulation of cristae.

Nature

Beating the break-even point with a discrete-variable-encoded logical qubit

mercredi 22 mars 2023 par Zhongchu Ni, Sai Li, Xiaowei Deng, Yanyan Cai, Libo Zhang, Weiting Wang, Zhen-Biao Yang, Haifeng Yu, Fei Yan, Song Liu, Chang-Ling Zou, Luyan Sun, Shi-Biao Zheng, Yuan Xu, Dapeng Yu

Nature, Published online: 22 March 2023; doi:10.1038/s41586-023-05784-4The lifetime of a qubit in a circuit quantum electrodynamics architecture can exceed the break-even point through quantum error correction, representing a key step towards scalable quantum (...)

Nature

Fruit flies are first known animals that can taste alkaline foods

mercredi 22 mars 2023 par Smriti Mallapaty

Nature, Published online: 22 March 2023; doi:10.1038/d41586-023-00825-4The ability to detect high pH could allow the insects to avoid toxic substances.

Nature

The driving test for driverless cars

mercredi 22 mars 2023 par Shamini Bundell

Nature, Published online: 22 March 2023; doi:10.1038/d41586-023-00868-7A virtual world filled with bad AI drivers can be used to test autonomous vehicles.

Nature

How to make driverless cars safer — expose them to lots of dangerous drivers

mercredi 22 mars 2023 par Nick Petrić Howe, Shamini Bundell

Nature, Published online: 22 March 2023; doi:10.1038/d41586-023-00867-8A method to test and teach autonomous cars how to deal with dangerous situations, and a renewed interest in bats and how they deal with viruses.

Nature