Greta Thunberg

 Greta Tintin Eleonora Ernman Thunberg:
She is "a Swedish environmental activist who has gained international recognition for promoting the view that humanity is facing an existential crisis arising from climate change. Thunberg is known for her youth and her straightforward speaking manner, both in public and to political leaders and assemblies, in which she criticizes world leaders for their failure to take sufficient action to address the climate crisis." - The Magnitude of All Things