références en Anglais

The USDA has begun removing references to climate change on its webpages and sites, including the U.S. Forest Service website.

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

Near-real time updates of key global climate variables from the the Copernicus Climate Change Service (C3S)

WMO's annual State of the Climate in Europe report explores changes in climate indicators, extreme events and climate policy.

Report calls for better safeguards to prevent bioterrorists from weaponizing new technology

The summary for policymakers (SPM) and the chapters of the Methodological assessment regarding the diverse conceptualization of multiple values of nature and its benefits, including biodiversity and ecosystem functions and services (referred to as the “assessment of the diverse values and valuation of nature”), were approved and accepted respectively by the IPBES Plenary during its ninth session, held from 3 to 9 July 2022 in Bonn, Germany. The background of this assessment dates to 2013, when at its second session (IPBES 2) in Antalya, Turkey, the IPBES Plenary approved the initiation of scoping for a methodological assessment. During the third session of the IPBES plenary, in Bonn, Germany in 2015, the expert group established for scoping the methodological assessment and developing a preliminary guide, was requested to revise the scoping report for the methodological assessment based on comments received following an open review by Governments and stakeholders. At IPBES 4, in Kuala Lumpur, Malaysia in 2016

It took me a while but I finally digested the 107 pages of Chapter 5: Demand, services and social aspects of mitigation in the last IPCC report on Mitigation of climate change. This chapter is worth the read if only because it’s the first one fully dedicated to demand-side strategies. What I find remarkable is its conceptual width, including a few ideas that are usually considered too radical in these kind of venues. But just like the rest of the report, it is long and – as academic writing too often is – full of abstract jargon and somnolent prose. What I want to do in this article is to explain why Chapter 5 is more radical (in the good sense of the term) that you may think.

With signs that Moscow’s initial invasion strategy has not gone according to plan, the crisis in Ukraine has reached a critical moment.

On the fifth day of the Russian invasion of Ukraine, one of many unanswered questions is why Russia has launched a military campaign at huge cost with maximalist objectives, and then declined to use the vast majority of its fixed wing combat aircraft.

Tree diversity is fundamental for forest ecosystem stability and services. However, because of limited available data, estimates of tree diversity at large geographic domains still rely heavily on published lists of species descriptions that are geographically uneven in coverage. These limitations have precluded efforts to generate a global perspective. Here, based on a ground-sourced global database, we estimate the number of tree species at biome, continental, and global scales. We estimated a global tree richness (≈73,300) that is ≈14% higher than numbers known today, with most undiscovered species being rare, continentally endemic, and tropical or subtropical. These results highlight the vulnerability of global tree species diversity to anthropogenic changes.

The Belgian Institute for Sustainable IT is a think and do tank founded in 2020, based on its French equivalent the INR. Our aim is to bring together Belgian companies, organizations and individuals, and help them succeed their digital transition while reducing the environmental and social footprint of their IT services and usages. Thanks to the support of our members and of public authorities, we promote digital technologies and services that are more sustainable, inclusive and ethical.

In Paris, all governments solemnly promised to come to COP26 with more ambitious 2030 commitments to close the massive 2030 emissions gap that was already evident in 2015. Three years later the IPCC Special Report on 1.5°C reinforced the scientific imperative, and earlier this year it called a climate “code red.” Now, at the midpoint of Glasgow, it is clear there is a massive credibility, action and commitment gap that casts a long and dark shadow of doubt over the net zero goals put forward by more than 140 countries, covering 90% of global emissions.

This book explores how the State can play a role as an enabler of citizens-led social innovations, to accelerate the shift to sustainable and socially just lifestyles.

Insects have declined by 75% in the past 50 years – and the consequences may soon be catastrophic. Biologist Dave Goulson reveals the vital services they perform

Professor Reinhard Loske argues that the idea that the ‘economisation of nature’ represents the one and only path to salvation should be viewed much more critically. Should cost-free services that are provided by nature, be understood as ecosystem services and allocated a price ? Should a landscape worthy of conservation be evaluated by means of a cost-benefit analysis ?