Kammala wannan jumla: Taron gwagwarmayar Thunberg ya fara ne ta hanyar shawo kan iyayenta suyi zaɓin salon rayuwa wanda zai rage sawun carbon nasu. A watan Agusta 2018, yana da shekaru 15, ta fara yin amfani da kwanakin makarantar ta a waje da majalisar dokokin Sweden don yin kira ga tsauraran matakai game da canjin yanayi ta hanyar rike da alamar karanta "" (School Strike for Climate). Ba da daɗewa ba wasu ɗalibai suka yi irin wannan zanga-zangar a yankunansu. Tare suka shirya wani yajin aikin makaranta na sauyin yanayi a karkashin sunan "Jumma'a don Nan gaba". Bayan da Thunberg ya yi jawabi ga
Taron Canjin Yanayi na Majalisar Dinkin Duniya na 2018, yajin aikin dalibai ya faru kowane mako a wani wuri a duniya. A cikin 2019, an yi zanga-zangar da aka tsara da yawa a cikin birane da yawa waɗanda suka shafi ɗalibai sama da miliyan ɗaya kowannensu. Don kauce wa jirgin sama mai amfani da makamashi, Thunberg ta tashi zuwa Arewacin Amurka inda ta halarci taron kolin Majalisar Dinkin Duniya na 2019 kan sauyin yanayi. Jawabin da ta yi a can, inda ta ce "Yaya za ku iya", ya sami karbuwa sosai a cikin manema labarai kuma an saka shi cikin kiɗa.