Veille 2.1

Over the past 50 years, humans have extracted the Earth’s groundwater stocks at a steep rate, largely to fuel global agro-economic development. Given society’s growing reliance on groundwater, we explore ‘peak water limits’ to investigate whether, when and where humanity might reach peak groundwater extraction. Using an integrated global model of the coupled human–Earth system, we simulate groundwater withdrawals across 235 water basins under 900 future scenarios of global change over the twenty-first century. Here we find that global non-renewable groundwater withdrawals exhibit a distinct peak-and-decline signature, comparable to historical observations of other depletable resources (for example, minerals), in nearly all (98%) scenarios, peaking on average at 625 km3 yr−1 around mid-century, followed by a decline through 2100. The peak and decline occur in about one-third (82) of basins, including 21 that may have already peaked, exposing about half (44%) of the global population to groundwater stress. Most

“100% plantaardig!”, “CO2-neutraal geproduceerd”, “Gecertificeerd voor duurzaamheid”… Klinkt goed, toch? Maar let op: wat bedrijven op hun verpakkingen en in hun marketinguitingen claimen, is niet altijd wat het lijkt. Greenwashing, oftewel het misleidend presenteren van producten of diensten als duurzaam, is helaas een wijdverspreid probleem.

Op woensdag 15 november om 15 uur verstoorden activisten van het GrowthKills-collectief [1] het "re-use v. recycle"-panel op de jaarlijkse Sustainability Future Week van Politico in Brussel, een evenement waar verslaggevers en redacteuren belangrijke politici, wetenschappers, campagnevoerders en bedrijfsleiders interviewen over het energie- en klimaatbeleid van de EU [2].

Les Sustainability-linked bonds (SLB) ont un format innovant permettant de lier le taux d’intérêt d’une dette à l’atteinte d‘objectifs environnementaux, sociaux ou de gouvernance. Beaucoup de SLB comportent aujourd’hui des objectifs de réduction des émissions de gaz à effet de serre. Ce mécanisme doit néanmoins contraindre davantage les émetteurs pour devenir un véritable outil de décarbonation.

Energy return on investment (EROI) is a biophysical and ecological economics concept that is useful to think about how organisms, ecosystems and societies must obtain enough surplus energy returned from energy gathering activities to live, reproduce, and thrive. EROI can help us overcome the false dualism between nature and society. EROI is a useful metric for economics because it is based on immutable physical laws rather than sometimes arbitrary human preferences. It is essential for assessing useful power, energy trade-offs, efficiencies (and inefficiencies), resource depletion trends, resource quality, and surplus potentials of different fuels and technologies that power, or might power, our socio-economic systems. Apparent inconsistencies in the literature can generally be reduced or eliminated by paying careful attention and explicitly stating boundaries and definitions. We argue that proper use of EROI is critical to understand the interconnections among the environment, energy, and socio-economic deve

Human activity is putting the Earth on a trajectory towards environmental collapse. The SDGs were adopted in2015 to reconcile human activity with planetary boundaries. So far, the SDGs have not lived up to their promise in European Union member states. Most EU countries have seen socioeconomic development alongside environmental degradation. Progress towards environmental sustainability only occurs in countries with slow or negative socioeconomic trends.

Metals will play a central role in successfully building Europe’s clean technology value chains and meeting the EU’s 2050 climate-neutrality goal. In the wake of supply disruptions from the COVID-19 pandemic and Russia's invasion of Ukraine, Europe’s lack of resilience for its growing metals needs has become a strategic concern. This study evaluates how Europe can fulfil its goal of “achieving resource security” and “reducing strategic dependencies” for its energy transition metals, through a demand, supply, and sustainability assessment of the EU Green Deal and its resource needs . It concludes that Europe has a window of opportunity to lay the foundation for a higher level of strate- gic autonomy and sustainability for its strategic metals through optimised recycling, domestic value chain investment, and more active global sourcing. But firm action is needed soon to avoid bottlenecks for several materials that risk being in global short supply at the end of this decade.

La protection de l’environnement pourrait-elle nuire à une partie de l’humanité ? C’est ce que suggère une étude publiée jeudi 3 février 2022 dans la revue Nature Sustainability. D’après les scientifiques de l’université d’Aberdeen (Écosse) qui en sont à l’origine, l’extension de la surface terrestre mondiale destinée à la conservation, une approche clé pour protéger la biodiversité, pourrait entraîner des centaines de milliers de morts de la faim dans certaines régions du monde.

Infinite growth on a finite planet has pushed us into crisis, and this forum tackles the difficult questions and taboo topics: Bursting the fantasy of sustainability based on clean energy transition and arguing for equitable approaches to global population. Pathways forward include a deliberate contraction of the human enterprise and a planned collapse.

Une étude de l’ETH Zurich publiée dans Nature sustainability démontre qu’entre 1995 et 2015 l'empreinte carbone globale du plastique a doublé, relate la RTS. Cette augmentation drastique est due aux centrales à charbon qui produisent l’électricité nécessaire à la fabrication du plastique. Dans certains secteurs en Inde, en Chine et en Indonésie, elle a carrément été multipliée par cinquante.

Le Safer, un pétrolier abandonné au large du Yémen, menace de sombrer depuis cinq ans, avec plus de 1,1 million de barils de pétrole brut. Une nouvelle étude, publiée dans la revue Nature Sustainability, alerte sur les conséquences potentiellement désastreuses de cette tragédie.

Europe’s 25 largest banks are still failing to present comprehensive plans that address both the climate crisis and biodiversity loss, putting their sustainability pledges in doubt, campaigners have warned.

“Once you learn how damaged the world’s ecosystems are, it’s not really something you can unsee,” says Rachel Larrivee, 23, a sustainability consultant based in Boston. “To me, there’s no point in pursuing a career – or life for that matter – in any other area.”

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Nous croyons en un monde où les entreprises doivent répondre aux défis du 21ᵉ siècle et contribuent à une société prospère, juste et inclusive à l’intérieur des limites planétaires.