A life-cycle assessment study of the natural selenizza compared with petroleum bitumen has shown that the environmental impact of the selenizza is about half the impact of the road asphalt produced in oil refineries in terms of carbon dioxide emission.
ɐ lˈaɪfsˈaɪkəl ɐsˈɛsmənt stˈʌdi ʌvðə nˈætʃɚɹəl sˈɛlənˌɪzə kəmpˈɛɹd wɪð pətɹˈoʊliːəm bɪtˈuːmɛn hɐz ʃˈoʊn ðætðɪ ɛnvˌaɪɹənmˈɛntəl ˈɪmpækt ʌvðə sˈɛlənˌɪzə ɪz ɐbˌaʊt hˈæf ðɪ ˈɪmpækt ʌvðə ɹˈoʊd ˈæsfɔlt pɹədˈuːst ɪn ˈɔɪl ɹᵻfˈaɪnɚɹiz ɪn tˈɜːmz ʌv kˈɑːɹbən daɪˈɑːksaɪd ɪmˈɪʃən.