Greta Thunberg

Greta Thunberg is a Swedish environmental activist who gained international prominence as a teenager for her blunt warnings about climate change.

In 2018, she began skipping school to protest outside the Swedish parliament, sparking a global youth movement.

Her name has become shorthand for young climate activism: She's the Greta Thunberg of her generation.

Critics use it dismissively for perceived youthful idealism.