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 ...

Some 60 world leaders gather at UN for a "climate emergency" summit aimed at reinvigorating the faltering Paris agreement, at ...

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.

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 ...

Swedish climate activist Greta Thunberg, 16, arrives in the US after a 15-day journey crossing the Atlantic in the Malizia II, a zero-carbon yacht, on August 28, 2019 in New York. Teenage climate ...