Mining activists attacked as South Africa delays energy transition

Mfolozi Community Environmental Justice Organization leader Fikile Ntshangase was murdered in 2020. Image courtesy of Lunga Bhengu/groundWork. Environmental justice activists have spoken out against coal and iron ore mining in South Africa, telling a recent human rights hearing that the industry violently undermines the country’s promised energy transition. They also noted the continued threats, displacements,…

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Bases de datos vectoriales versus bases de datos tradicionales: lo que las empresas deben saber

PostgreSQL, MySQL y Oracle han impulsado sistemas empresariales durante décadas; optimizado para esquemas claramente definidos, integridad transaccional y rendimiento predecible. Se destacan en responder lo que preguntaste, no lo que quisiste decir. Aquí está el problema: la IA lo cambia todo. Los sistemas de inteligencia artificial modernos no solo buscan coincidencias exactas; buscan significado. Necesitan…

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Double-layer carbon spheres drive cleaner conversion of nitrate to nitrogen

Illustration of double layer mesoporous carbon sphere catalyst with single atom dual sites. The inner Fe-N₄ centers drive nitrogen-nitrogen coupling, while the outer Mg-N₄ shell acts as a proton barrier, directing the reaction toward harmless nitrogen gas (N₂) instead of ammonia. This design achieves high nitrate removal and exceptional selectivity, offering a sustainable solution for…

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