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La quantità di energia consumata dalle luci di Natale in America supera di gran lunga il consumo elettrico annuale di paesi poveri come Etiopia o El Salvador. E’ quanto risulta da uno studio apparso su un blog dal Center for Global Development, secondo il quale le "luci decorative" che adornano gli alberi di Natale nelle città americane consumano 6,63 miliardi di kilowattora (kW/h) d'energia, il che è più del consumo annuo nazionale in El Salvador (5,53 miliardi di kW/h), Etiopia (5,3 miliardi di kW/h) o Tanzania (4,81 miliardi di kW/h).
I due autori, Todd Moss e Priscilla Agyapong, hanno incrociato i dati di una ricerca del ministero dell'Energia statunitense del 2008 con quelli della Banca Mondiale. Lo studio rileva anche che i 6,63 milioni di kW/h non rappresenta che lo 0,2% del consumo annuale di energia degli Stati Uniti.
Gli autori fanno notare anche che l'energia utilizzata dalle case statunitensi rappresenta circa un quarto del consumo totale del paese, pure tenendo conto dei 14 milioni di frigoriferi attivi nella nazione.
Reuters/AGI/EnCa
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