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Comprendre l’étrange découpage des fuseaux horaires en 5 minutes
Les fuseaux horaires divisent la surface terrestre en plusieurs zones à l’intérieur desquelles l’heure est en principe identique en tous lieux. Au…
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After all is said and done, more is said than done
Must we always teach our children with books?” naturalist David Polis once asked, and then declared: “Let them look at…
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