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Il clima che vogliamo decalogo del cittadino ecologico

Prende il via il summit delle Nazioni Unite sui cambiamenti climatici. Ma la salute del pianeta dipende anche dai comportamenti individuali. Lo dimostra la California, all’avanguardia nella lotta per la riduzione dei consumi energetici.

Qui, nella capitale della California dal clima spesso torrido anche in autunno, i coniugi Waldrep hanno appena finito di ridipingere le pareti esterne di casa. Usando una nuova vernice bianca che assorbe meno calore solare, hanno tagliato del 20% i consumi di elettricità per l’aria condizionata. La famiglia Waldrep fa parte del movimento californiano battezzato “cool roofs”, doppio senso che significa tetti freschi ma anche “di moda”. In un mondo dove la temperatura media tende a salire e dilagano i condizionatori d’aria anche in zone dove un tempo non esistevano, una piccola innovazione come questa può avere un impatto cruciale.

http://www.repubblica.it/2009/06/sezioni/ambiente/conferenza-copenaghen/lotta-cambio-clima/lotta-cambio-clima.html


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