Greta Thunberg is a Swedish environmental activist

who gained international recognition for her work in raising awareness about climate change

She began protesting outside the Swedish parliament in August 2018, at the age of 15, by refusing to attend school until the government took action to address the climate crisis.

Thunberg's actions sparked a global movement of youth-led protests against climate change, known as the "Fridays for Future" movement.

Thunberg has become a prominent voice in the fight against climate change, and has given speeches at the United Nations and other international events.