Greta Thunberg Blasts br World Leaders at the UN In a scathing speech, the 16-year-old br said inaction on climate change is br "stealing away her dreams." Greta Thunberg, via United Nations The Swedish activist added that plans to cut emissions in half within a decade is not enough. Greta Thunberg, via United Nations Thunberg then tweeted that she br and group of others have issued a br legal complaint over climate issues. The filing says that the countries, which include Germany and Brazil, have disrupted br a human rights treaty. Greta Thunberg, via Twitter Besides her UN speech, br the environmentalist led a br worldwide climate strike last week. Millions across the globe participated in the protest.