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♪ (musica) ♪

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Era una palla di fuoco,[br]e si spostava così velocemente.

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Vedevo solo fiamme

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sulla collina dietro casa mia.

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Una vera e propria catastrofe.

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Il fuoco si avvicinava[br]bruciando tutto.

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(voce narrante) Alaska, Arizona,[br]California, Montana, Oregon,

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Australia, Brasile,[br]Canada, Grecia, Russia--

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Questi sono solo alcuni dei luoghi[br]dove, recentemente

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sono scoppiati incendi enormi.

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I satelliti NASA rilevano

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ogni anno oltre un milione [br]di vasti incendi in tutto il mondo.

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(Doug) in America occidentale, per es.[br]gli incendi sono aumentati di vastità

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anno dopo anno, nel giro di poco

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aumentando anche d'intensità

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e di velocità di propagazione,

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con molte difficoltà quindi a domarli

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sono più pericolosi [br]per i centri abitati nelle vicinanze.

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(narratore) Spesso le fiamme sono causate[br]da attività umane,

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ma, a volte, anche la politica[br]alimenta le fiamme.

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Prendiamo la California.

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Qui le foreste sono cresciute troppo

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in parte a causa delle politiche federali[br]del passato di spegnere gli incendi

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invece di farli bruciare.

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♪ (music) ♪