Open Access Publications (Univ. de Genève)
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Danger! Glacial lake outburst floods ahead!
No full textThe sudden release of water and sediment from glacial lakes, known as glacial lake outburst floods (GLOFs), are a major natural hazard that can result in significant life loss. The danger of GLOFs varies globally, however in 2020, GLOFs threatened 15 million people. People living in High Mountain Asia and the Andes were the most in danger, with China and Pakistan the most threatened nation
Long or short doesn’t matter: the tale of an unusual gamma-ray burst
No full textWe think that gamma-ray bursts have two types of progenitors, each of them producing flashes with different durations, long or short. In December 2021, the most bizarre burst ever not only broke our progenitor paradigm, but also showed a late-time excess of gamma-rays never observed before. Both these mysteries have a common protagonist: the coincident detection of a kilonova
Stressful memories help plants resist caterpillars
No full textCurrent agricultural practices heavily depend on harmful pesticides to protect crops against deadly pests and diseases. But what if plants could protect themselves? Our research uncovers an epigenetic mechanism that allows plants to \u27remember\u27 stress, providing them with long-lasting defense against pests like caterpillars. This discovery could pave the way for more sustainable crop protection strategies
Writing cell memory: how Histones play a role in Epigenetic Memory
No full textOur cells remember their cell type-specific functions during their lifetime using modifications on histones, the proteins packaging DNA. Such epigenetic memory is challenged during DNA replication when histones are evicted from DNA. We reveal new evidence that cells recycle histones H2A-H2B to replicated DNA with their modifications, hereby providing epigenetic memory across cell division
Is evolution predictable?
No full textThere are many shapes, forms, and patterns which could conceivably exist in biology. What are the factors that affect which ones will be selected, and determine evolutionary outcomes? We study this question by examining the bias towards certain shapes of RNA molecules that exist in nature
HIV pushes the nuclear envelope to start an infection
No full textRetroviruses like HIV-1 enter the nucleus of immune cells to infect people, but it has been unclear how a relatively large virus can pass through the nuclear envelope or its small nuclear pores. We found a previously unknown pathway of entry, in which a virus-containing package causes invaginations to form in the nuclear envelope. Our work reveals new drug targets for limiting viral infections
Gas in distant galaxies: mixed or matched?
No full textGas is an essential ingredient of galaxies because it fuels star and planet formation. Studying this gas is important because it tells us how galaxies form, evolve, and interact with their environment. In this work we studied 64 small, distant galaxies and found that the gas is not well-mixed which tells us how it is moving in, out and around the galaxies
Likely increase in coral thermal tolerance at a Pacific archipelago
No full textOver the coming decades, reef-building corals will face ever hotter ocean temperatures, yet it remains unknown if their thermal tolerance can keep up with the pace of warming. A new study reveals that coral thermal tolerance in Palau has likely risen by 0.1 °C/decade since the late 1980s. Despite this ecological resilience, strong action on climate change remains a priority to protect coral reefs
Earth’s large lakes are shrinking
No full textLakes play a crucial role in providing freshwater and support many essential ecosystem services. In a new study, we found significant water losses in 53% of large lakes on Earth in the past 28 years. These losses are attributed to human consumption, warming climate, and sedimentation. Two billion people reside in areas where lakes are drying, underscoring the urgent need for management solutions
Retour d’expérience de ma participation à la conférence iPRES22
Get PDFOrganisée par la Digital Preservation Coalition (DPC), la 18ème conférence internationale sur la préservation numérique (iPRES) a eu lieu à Glasgow, en Écosse, du 12 au 16 septembre 2022. Cette édition correspond également au 20ème anniversaire du DPC, une organisation ancrée à Glasgow, qui a voulu de ce fait accueillir des participants du monde entier dans leur ville. Le résultat a été une conférence hybride avec 649 participants qui se sont joints en personne (437) et en ligne (212)