In an emotional speech at the United Nations during the Climate Action Summit on Monday, the 16-year-old Swedish climate activist Greta Thunberg appealed to world leaders about the grave need to stop ...

More than a dozen children sound the alarm on the state of our climate. One by one more than a dozen children addressed a room full of adults Monday morning, sounding the alarm on the state of climate ...

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 ...

NEW YORK -- She stepped onto the biggest of global stages to face the most diverse of audiences, and she made it count. "How dare you?" she kept saying to some of the world's most powerful people.

Greta Thunberg didn’t enter politics - she attacked it from the outside. At 15, she skipped school, held a sign, and ended up speaking to world leaders who had ignored the issue for decades. Her ...