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Una puntata di
https://www.rsi.ch/kids/scelta/grandi/serie/?id=703500
Il Giardino di Albert LIS
Viaggio al centro della terra - LIS
Per la scienza, le viscere della terra restano tutt'ora un campo ignoto. La trivellazione più profonda arriva a 12 km di profondità: per raggiungere il centro della terra, ne mancano 6200!
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