– Outil de recherche de références documentaires –
Les champs auteur(e)s & mots-clés sont cliquables. Pour revenir à la page, utilisez le bouton refresh ci-dessous.
filtre:
water
Most research on “forever chemicals” focuses on how best to remove them from the environment. But solutions to tricky problems often emerge from the most unexpected of places—as demonstrated by a new study that instead redirects the pollutants into becoming tools for extracting precious lithium. In a recent Nature Water study, a team led by Rice University researchers describes a novel way to use spent perfluoroalkyl and polyfluoroalkyl substances, or PFAS, to recover lithium from high-salinity brine pools. The team tapped into the fluorine content inside PFAS leftovers, using it to attract lithium from briny water. Remarkably, the team was able to collect lithium fluoride at 99% purity and confirmed that the sample was pure enough to boost the stability and performance of lithium-ion batteries.
Residents report terror of smoke-filled city, from potentially toxic rain, air and water to food scarcity and difficulty of escape
De wereldwijde opwarming van de oceanen kan de hoeveelheid beschikbare vis met 19,8% doen afnemen. Dat toont een nieuwe studie in het wetenschappelijk tijdschrift Nature aan.
The Gulf Stream is part of the Atlantic Meridional Overturning Circulation (AMOC). The AMOC is a tipping element and may collapse under changing forcing. However, the role of the Gulf Stream in such a tipping event is unknown. Here, we investigate the link between the AMOC and Gulf Stream using a high-resolution (0. 1°) stand-alone ocean simulation, in which the AMOC collapses under a slowly-increasing freshwater forcing. AMOC weakening gradually shifts the Gulf Stream near Cape Hatteras northward, followed by an abrupt northward displacement of 219 km within 2 years. This rapid shift occurs a few decades before the simulated AMOC collapse. Satellite altimetry shows a significant (1993–2024, p < 0.05) northward Gulf Stream trend near Cape Hatteras, which is also confirmed in subsurface temperature observations (1965–2024, p < 0.01). These findings provide indirect evidence for present-day AMOC weakening and demonstrate that abrupt Gulf Stream shifts can serve as early warning indicator for AMOC tipping.
Even as weather extremes worsen, the voices calling for the rolling back of environmental rules have grown louder and more influential
Vandaag rijden er amper personenwagens op waterstof over onze wegen. Ooit, een jaar of 15 geleden, leek de toekomst de waterstofwagen toe te lachen. Ook in de Europese plannen om de uitstoot van de transportsector te vergroenen, lijkt er amper nog rekening mee gehouden te worden. Hoe zou het nog zijn met de waterstofwagen?
Spanje en Portugal krijgen al een paar dagen af te rekenen met bijzonder slecht weer en beterschap is niet meteen in zicht. In de Spaanse regio Andalusië is code rood afgekondigd voor zware regenval. In Portugal is een dode gevallen en geldt code oranje voor de hele kustlijn. Het slechte weer wordt veroorzaakt door de zuidelijke ligging van de straalstroom. Tegelijk zit het weer in Europa al een hele tijd geblokkeerd: met heel koud weer boven het noordoosten van Europa.
The world has entered an era of “global water bankruptcy” that is harming billions of people, a UN report has declared. The overuse and pollution of water must be tackled urgently, the report’s lead author said, because no one knew when the whole system could collapse, with implications for peace and social cohesion. All life depends on water but the report found many societies had long been using water faster than it could be replenished annually in rivers and soils, as well as over-exploiting or destroying long-term stores of water in aquifers and wetlands.
Kunstmatige intelligentie heeft een forse ecologische voetafdruk. Onderzoeker Alex de Vries-Gao van de Vrije Universiteit Amsterdam becijferde dat AI-systemen in 2025 tussen 33 en 80 miljoen ton CO2 hebben uitgestoten. Het waterverbruik is nog buitensporiger.
Like living beyond your financial means, using more water than nature can replenish can have catastrophic results.
Flagship report calls for fundamental reset of global water agenda as irreversible damage pushes many basins beyond recovery
“Water crisis” has become the default label for almost any episode of water stress, from short-lived droughts to decades-long overuse of rivers and aquifers. Yet in many regions of the world, water problems no longer resemble a crisis in the conventional sense. They represent a post-crisis failure state in which human–water systems have exceeded their hydrological carrying capacities, and societies have spent beyond their sustainable hydrological budgets for so long that critical water assets are depleted, some ecosystem damages are irreversible on human time scales, and a return to “normal” is infeasible even with prohibitive economic, social, and environmental costs.
Satellite analysis warns that widespread land subsidence threatens 1.6 billion people by 2040, with 86% of the at-risk population concentrated in Asia
Selon les informations du « Monde », Nestlé Waters est assigné devant le tribunal de Nanterre par son concurrent qui demande le retrait du marché des eaux Perrier, Vittel, Contrex et Hépar.
De beschikbaarheid van water is in tien jaar tijd met 7 procent gedaald per wereldbewoner. Dat blijkt uit cijfers van de Verenigde Naties.
Pour voir les références d’un(e) auteur(e), cliquez sur son nom.
Pour voir les références d’un mot-clé, cliquez dessus.


