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The crystallization regime of Mercury’s core controlled by Silicon?

Published on February 22, 2022

Mercury being so close to the Sun, the environment of formation of the planet is considered to be depleted in oxygen, and thus very reducing, leading to the presence of significant quantities of silicon alloyed with iron in its core (Fe-Si alloy). However, the phase diagram of the Fe-FeSi system remained poorly constrained to the high pressure and high temperature conditions prevailing at the center of Mercury
A team of researchers, led mainly by members of IMPMC and ISTerre, have (...)

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New perspectives in the study of active faults in metropolitan France: the "Active faults France" research axis

Published on February 07, 2022

Metropolitan France shows a strong structural heritage and a low deformation rate. However, destructive earthquakes can occur there. Active faults are therefore a priority research topic for our societies. In this article and as part of a national effort to identify the still largely fragmentary knowledge, the team of researchers involved in this study stresses that major efforts from the active tectonics and paleoseismology community are needed to generate robust data, especially on the (...)

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Climate and floods: an international study conducted in the European Alps sheds light on the links between warmer periods and floods

Published on January 28, 2022

An international team, lead by researcher from Institut des géosciences et de l’environnement de Grenoble (IGE/OSUG – UGA/Grenoble-INP-UGA/CNRS/IRD), has studied lake sediments and reconstructed flood records during the cold and warm periods of the Industrial Era, the last millennium and the Holocene. The results of this paleohydrological study, which will be published in Nature Geosciences on 27 January 2022, show that regionally the flood hazard could globally decrease with climate warming, (...)

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Hope for Present-Day Martian Groundwater Dries Up

Published on January 26, 2022

Liquid water previously detected under Mars’ ice-covered south pole is probably just a dusty mirage, according to a new study of the red planet led by researchers at The University of Texas at Austin.
Scientists in 2018 had thought they were looking at liquid water when they saw bright radar reflections under the polar cap. However, the new study published Jan. 24 in the journal Geophysical Research Letters found that the reflections matched those of volcanic plains found all over the red (...)

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Antarctica : Beyond Epica exploring the climate of the past

Published on December 03, 2021

The first ice core drilling campaign of Beyond Epica-Oldest Ice is starting at Little Dome C, in Antarctica. This international research project is funded by the European Commission with 11 million euros and it is coordinated by the Institute of Polar Sciences of the Cnr (National Research Council of Italy). The project aims to obtain information on the evolution of the temperatures and on the composition of the atmosphere 1.5 million years ago, by analysing the ice cores that will be extracted from the deep ice in Antarctica. These data will be invaluable for predicting future climate trends and for implementing mitigation strategies

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Playing Tetris with protein nanocrystals

Published on July 21, 2021

New research by scientists from the VIB-VUB Center for Structural Biology (Belgium), the Radboud University (Netherlands), Institut de Biologie Structurale and The Institut des sciences de la Terre de Grenoble, ISTerre/OSUG (CNRS/IRD/Université Grenoble Alpes/Université Savoie Mont Blanc) (Grenoble) using cryo-electron microscopy now demonstrates that these protein crystal nuclei don’t have to work in isolation: the presence of nearby nuclei can help early-stage protein crystals find their ’shape’.

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India: origin of the flood that devasted Chamoli

Published on June 29, 2021

Networks of researchers, an alliance of experts from various disciplines and a series of international collaborations have identified the cause of the geological disaster that occurred in India in February 2021. More than 200 people were killed or reported missing, following an avalanche of rock and ice. What preventative measures can be put in place to ensure that such a disaster does not happen again?
On Sunday 7 February, in India, a torrent of water, rocks and ice gushed down the (...)

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Identifying nature-based transformations towards sustainability in the Alps

Published on January 07, 2021

Since its launch in June 2017, 42 researchers have been selected to join the Make Our Planet Great Again program. Among them, Ignacio Palomo, CNRS researcher hosted at the Alpine Ecology Laboratory (LECA - UMR CNRS-UGA-USMB) and coordinator of the PORTAL project which aims to identify transformative solutions based on nature to face climate change in the Alps. One of the first publications related to the project and to the work of the The Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) appeared this December at the Proceedings of the National Academy of Sciences of the United States of America, and describes the need to tackle climate change and the conservation of biodiversity simultaneously under the framework of the post-2020 biodiversity targets.

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