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(c) OCG
(c) OCG
  • 15. Oktober 2025

Voluntourismus verbindet Generationen weltweit

EURONEWS

Der Voluntourismus erlebt ein Comeback: Junge und ältere Reisende engagieren sich gemeinsam in gemeinnützigen und ökologischen Projekten. So wird Reisen zu einer bereichernden Erfahrung mit spürbarem Nutzen für Mensch und Natur.

Researchers from Italy made a fully biodegradable hydrogel from red algae carrageenan that can swell up to 7000%, retain water, release nutrients, and support plant growth even in drought. It cuts waste, needs very little water and works in hydroponics and soilless systems.
Previous Beitrag Biologisch abbaubarer Super-Hydrogel rettet soillosen Anbau bei Dürre
Next Beitrag Mexico eröffnet erste Niedrigemissionszone
Guadalajara has inaugurated Mexico’s first Low Emission Zone in its historic center, targeting a reduction of 40,280 tonnes of CO₂. Backed by C40 Cities and the British Embassy, the initiative enhances energy efficiency, supports green jobs, and promotes cleaner urban living.

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Meistgelesene Artikel

An Essex couple trialled a HeatHub—a mini data-centre in their garden shed with over 500 computers—to heat their home while moving from gas boiler to solar setup. Their monthly bills dropped from about £375 to just £40-£60, blending innovation with home comfort.
Mini-Rechenzentrum im Garten reduziert Heizkosten auf £40
A new bio-inspired filter developed at the University of Bonn uses the same gill-arch architecture as filter-feeding fish to remove more than 99 % of microplastic fibers from washing machine wastewater. Because it’s self-cleaning and clog-resistant, it could be cheaply built into future washing machines — a clear win for cleaner water and less plastic pollution.
Fisch-inspirierter Filter entfernt 99 % vorhandener Mikroplastikfasern
Scientists at the University of Illinois have developed a method that converts food waste into sustainable aviation fuel (SAF) meeting ASTM and FAA benchmarks without blending fossil fuels. The process, using hydrothermal liquefaction and catalysts, opens new paths in the circular bioeconomy and aviation decarbonisation.
Lebensmittelabfälle werden zu nachhaltig zertifiziertem Flugtreibstoff
France’s Parliament approved a major reform: any sexual act without explicit, informed, revocable consent will now be criminalized. The law defines consent as “free, specific, prior and revocable,” ensuring silence or no reaction is not considered agreement.
Frankreich verankert Einwilligung ins Vergewaltigungsrecht nach Pelicot-Fall
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