US President Donald Trump stirred up fresh outrage on social media Monday with a tweet mocking an impassioned speech made by 16-year-old activist Greta Thunberg at the UN climate summit in New York.

UNITED NATIONS -- Leader after leader told the United Nations on Monday that they will do more to prevent a warming world from reaching even more dangerous levels. But as they made their pledges at ...

Climate activist Greta Thunberg, 16, addressed the U.N.'s Climate Action Summit in New York City on Monday. Here's the full transcript of Thunberg's speech, beginning with her response to a question ...

THE HAGUE (Reuters) - Thousands of Dutch children skipped school to join a global climate strike on Friday, blocking traffic and asking their leaders "how dare you?" in a reference to Swedish teenage ...

Ms Thunberg was born in the Swedish capital Stockholm in 2003. Her mother Malena Ernman is an opera singer, and her father Svante Thunberg is an actor. She first learned about climate change when she ...

Greta Thunberg has been one of the most outspoken global voices calling for a ceasefire between Israel and Gaza. Her appeals have consistently centered on humanitarian urgency while ignoring the ...

Swedish activist Greta Thunberg has fired back after President Donald Trump slammed her. Trump called Thunberg a “strange” and “angry” person after the climate activist attempted to deliver aid to ...

Greta Thunberg gave a rousing speech before boarding a humanitarian aid flotilla to Gaza, their second attempt at delivering aid to Palestinians this year. Before leaving Barcelona the climate ...

Vice President Vance on Friday chided European leaders for their criticism of Elon Musk wading into their elections, comparing Musk’s actions to Swedish activist Greta Thunberg urging American leaders ...