In August 2018, aged 15, Thunberg began skipping school, vowing to remain out of school until after a Swedish election to attempt to influence the outcome. She protested outside the Swedish parliament where she called for stronger action on climate change by holding up a Skolstrejk för klimatet (School Strike for Climate) sign and handing out informational flyers.[7] After the election, Thunberg spoke in front of supporters, telling them to use phones to film her. She then said she would continue school striking for the climate every Friday until Sweden was in compliance with the Paris climate agreement.[8] Thunberg's youth and blunt speaking manner fueled her rise to the status of a global icon.[9]

After Thunberg's first school strike for the climate, other students engaged in similar protests. They united and organized the school strike for climate movement. After Thunberg addressed the 2018 United Nations Climate Change Conference, weekly climate strike protests took place on Fridays around the world. In 2019, coordinated multi-city protests involved over a million students each.[10] To avoid carbon-intensive flying, Thunberg sailed on a carbon-free yacht from England to New York where she addressed the 2019 UN Climate Action Summit.[11] In her speech, Thunberg scolded the world's leaders by exclaiming "How dare you" in reference to their perceived indifference and inaction to the climate crisis. Her admonishment made worldwide headlines.[12]

https://en.m.wikipedia.org/wiki/Greta_Thunberg

You're clearly a troll with nothing better to do than "just ask questions" https://youtu.be/elRxbGJuCw8 but for the benefit of others, click on the Wikipedia link above and read for yourself who Greta is and why she's famous.