O le Sightline Institute (sa i ai Northwest Siosiomaga Mataʻituina) o se tutoatasi, leai-tupe faʻavae faʻavae i Seattle, Uosigitone, U.S.

Taulaʻi i le siosiomaga faiga faʻavae, na faavaeina i le 1993 e activist ma tusitala Alan Durning. O lana misiona taua o le "faia Northwest o se faataʻitaʻiga lalolagi o le gafataulimaina - malosi nuu, se lanumeamata tamaoaiga, ma se soifua maloloina siosiomaga".

O le Inisitituti "Cascadia Scorecard", lolomiina i tausaga uma talu mai le 2004, togi le Pasefika Northwest bioregion i luga o le mafai gafatia agaʻi i luma gafataulimaina i vaega e fitu: soifua maloloina, tamaoaiga, faitau aofaʻi, malosiaga, sprawl, meaola, ma le filogia. O isi lolomiga sa faʻatauaina i fuafuaga mo suiga o lafoga o le siosiomaga, ma le "Fitu Vavega mo se Maalili Maalili: O Mea Uma e Fesoasoani e Faʻaleleia le Faʻamafanafanalolagi", lomia e le Sierra Club Books

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