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Syndication

Fri, 17 November 2023
Ekosfera/2023-11-15/Aluminioaren historia harrigarria

XIX. mendearen hasieran ez genuen aluminioa ezagutzen. Eta ezagutu genuenean, ugaria izanda ere, oso zaila zen erauzteko. Garestia zen. Gerora, bokata biltzeko materiala izateraino iritsi zen. Eta orain? Ingurumenaren ikuspuntutik ezin dugu esan merkea denik. 

Direct download: EKOIV-11c.mp3
Category:science -- posted at: 2:37am EDT