Il rapporto dell'UNEP avverte sul dilemma dell'estrazione globale di sabbia

Il Programma delle Nazioni Unite per l'ambiente ha pubblicato un rapporto sulla sostenibilità della sabbia nel maggio 2026 durante una presentazione a Ginevra.

Le aziende estraggono circa 50 miliardi di tonnellate di sabbia e ghiaia ogni anno per l'edilizia e l'industria. Il funzionario dell'UNEP Pascal Peduzzi ha osservato che questo volume potrebbe formare un muro alto e largo 27 metri attorno all'equatore.

La sabbia fornisce filtrazione naturale dell'acqua e protezione costiera, sostenendo al contempo ecosistemi diversificati. Il rapporto afferma che la massa dell'ambiente costruito ha superato la biomassa vivente entro il 2020, con sabbia e ghiaia che costituiscono quasi il 90 percento di quel totale.

L'agenzia ha chiesto una migliore governance e approcci di economia circolare. La sola domanda nel settore edile potrebbe aumentare del 45 percento entro il 2060 se le tendenze attuali dovessero continuare.

Articoli correlati

Indonesian officials overseeing waste site cleanup with May 2028 target banner
Immagine generata dall'IA

Government sets may 2028 target to resolve national waste crisis

Riportato dall'IA Immagine generata dall'IA

Coordinating Minister for Food Zulkifli Hasan has set a May 2028 deadline to end open dumping of waste nationwide. The target was announced amid President Prabowo Subianto’s direct attention to a waste crisis that has persisted for decades.

Around 40 million of the Philippines' 115 million population lack access to reliable water supply, according to the Department of Environment and Natural Resources (DENR). DENR Undersecretary Carlos Primo David stated that climate change or pollution could compromise water sources for millions. DENR chief Juan Miguel Cuna highlighted the challenge of water bankruptcy facing the country.

Riportato dall'IA

An analysis suggests that spreading crushed silicate rocks on agricultural fields could remove up to 1.1 billion tonnes of carbon dioxide from the atmosphere each year by 2100, while boosting crop yields. The method, known as enhanced rock weathering, accelerates natural processes to lock away CO2. However, researchers highlight uncertainties about its scalability and potential side effects.

The global economy wastes nearly a third of its output each year, according to a new analysis that puts the annual loss at about $29 trillion. The Circularity Gap Report 2026 attributes the shortfall to premature product failure, energy inefficiencies, and other avoidable losses.

Riportato dall'IA

A government expert panel met for the first time on Monday to discuss groundwater use, including by foreign nationals, and plans to compile a report by this summer. The land ministry aims to collaborate with local authorities to gather nationwide data on groundwater extraction, incorporating users' nationalities, and implement conservation measures. Amid growing concerns over foreign land acquisitions, officials stressed that discrimination is not the goal.

The Russian state atomic energy corporation Rosatom is seeking permits to extract uranium from the Stampriet Artesian Basin in Namibia by injecting sulphuric acid into the ground. The transboundary aquifer supplies drinking water and irrigation across Namibia, Botswana and South Africa.

Riportato dall'IA

Egypt's Minister of Water Resources and Irrigation, Hany Sewilam, and South Africa's Minister of Water and Sanitation, Bimmy Majodina, opened a joint virtual seminar marking International Women's Day to discuss women's roles in water management and international water cooperation. Held under the theme "Water for People", the event gathered female engineers, scientists, and water-sector specialists from both countries to exchange expertise and underscore women's contributions to water governance and diplomacy.

 

 

 

Questo sito web utilizza i cookie

Utilizziamo i cookie per l'analisi per migliorare il nostro sito. Leggi la nostra politica sulla privacy per ulteriori informazioni.
Rifiuta