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How the coronavirus pandemic slashed carbon emissions — in five graphs

mercredi 20 mai 2020 par Jeff Tollefson
Nature, Published online: 20 May 2020; doi:10.1038/d41586-020-01497-0Near-real-time data on carbon emissions reveal the sectors, countries and events that had the most impact, but it is unclear how long the dip will last.

Structure and mechanism of the mitochondrial Ca2+ uniporter holocomplex

mercredi 20 mai 2020 par Minrui Fan, Jinru Zhang, Chen-Wei Tsai, Benjamin J. Orlando, Madison Rodriguez, Yan Xu, Maofu Liao, Ming-Feng Tsai, Liang Feng
Nature, Published online: 20 May 2020; doi:10.1038/s41586-020-2309-6Cryo-electron microscopy reveals the structures of the mitochondrial calcium uniporter holocomplex in low- and high-calcium conditions, showing the gating mechanism that underlies uniporter activation in response to (...)

Podcast: A synthetic eye that 'sees' like a human

mercredi 20 mai 2020
Nature, Published online: 20 May 2020; doi:10.1038/d41586-020-01527-xListen to the latest science news, brought to you by Nick Howe and Shamini Bundell.

Origin of complexity in haemoglobin evolution

mercredi 20 mai 2020 par Arvind S. Pillai, Shane A. Chandler, Yang Liu, Anthony V. Signore, Carlos R. Cortez-Romero, Justin L. P. Benesch, Arthur Laganowsky, Jay F. Storz, Georg K. A. Hochberg, Joseph W. Thornton
Nature, Published online: 20 May 2020; doi:10.1038/s41586-020-2292-yExperimental analysis of reconstructed ancestral globins reveals that haemoglobin’s complex tetrameric structure and oxygen-binding functions evolved by simple genetic and biophysical (...)

A biomimetic eye with a hemispherical perovskite nanowire array retina

mercredi 20 mai 2020 par Leilei Gu, Swapnadeep Poddar, Yuanjing Lin, Zhenghao Long, Daquan Zhang, Qianpeng Zhang, Lei Shu, Xiao Qiu, Matthew Kam, Ali Javey, Zhiyong Fan
Nature, Published online: 20 May 2020; doi:10.1038/s41586-020-2285-xA biomimetic electrochemical eye is presented that has a hemispherical retina made from a high-density array of perovskite nanowires that are sensitive to light, mimicking the photoreceptors of a biological (...)

Quantum entanglement between an atom and a molecule

mercredi 20 mai 2020 par Yiheng Lin, David R. Leibrandt, Dietrich Leibfried, Chin-wen Chou
Nature, Published online: 20 May 2020; doi:10.1038/s41586-020-2257-1Quantum entanglement is realized between rotational levels of a molecular ion with energy differences spanning several orders of magnitude and long-lived internal states of a single atomic (...)

Artificial eye boosted by hemispherical retina

mercredi 20 mai 2020 par Hongrui Jiang
Nature, Published online: 20 May 2020; doi:10.1038/d41586-020-01420-7An artificial eye has been reported that incorporates densely packed, nanometre-scale light sensors into a hemispherical retina-like component. Some of its sensory capabilities are comparable to that of its biological (...)

Short-range order and its impact on the CrCoNi medium-entropy alloy

mercredi 20 mai 2020 par Ruopeng Zhang, Shiteng Zhao, Jun Ding, Yan Chong, Tao Jia, Colin Ophus, Mark Asta, Robert O. Ritchie, Andrew M. Minor
Nature, Published online: 20 May 2020; doi:10.1038/s41586-020-2275-zMetal alloys consisting of three or more major elemental components show enhanced mechanical properties, which are now shown to be correlated with short-range order observed with electron (...)

Dogs catch coronavirus, suspicious images and an autopsy challenge

mercredi 20 mai 2020
Nature, Published online: 20 May 2020; doi:10.1038/d41586-020-01443-0The latest science news, in brief.

Daily briefing: Hope and caution greet coronavirus vaccine trial results

mercredi 20 mai 2020 par Emma Stoye
Nature, Published online: 20 May 2020; doi:10.1038/d41586-020-01534-yStudies have shown tentatively positive results, but it’s still too soon to say whether the vaccines actually work. Plus: a major update for carbon dating, and the search for a ninth planet in our Solar (...)

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