A visibly angry Greta Thunberg berated world leaders for betraying her generation by failing to tackle greenhouse gas emissions.
"This is all wrong. I shouldn't be up here. I should be back at school on the other side of the ocean," she said while addressing a UN climate summit on Monday.
"You come to us young people for hope. How dare you?" she thundered.
"You have stolen my dreams and my childhood with your empty words, yet I'm one of the lucky ones. People are suffering, people are dying, entire ecosystems are collapsing.
"We are in the beginning of a mass extinction, and all you can talk about is the money and fairy tales of eternal economic growth. How dare you!"
Swedish teen, who has become the global face of the growing youth movement against climate inaction, is taking a year off from her studies.
After delivering her scathing speech, Thunberg fixed US President Donald Trump with a steady stare as they briefly crossed paths.
Russia has opened a criminal case against Ukrainian President Volodymyr Zelenskiy and put him on a wanted list, the state news agency TASS reported on Saturday, citing the Interior Ministry's database.
The death toll from rains in Brazil's southernmost state of Rio Grande do Sul rose to 56, local authorities said on Saturday morning, while dozens still have not been accounted for.
Hamas has said it is sending a delegation to Cairo on Saturday to discuss a deal for a truce and the release of hostages in Gaza, hours after US CIA Director William Burns arrived in the Egyptian capital, according to Egyptian sources.
NATO's four-month long military exercises near Russia's borders, known as Steadfast Defender, are proof the alliance is preparing for a potential conflict with Russia, a spokeswoman for Russia's Foreign Ministry said on Saturday.
Students at Trinity College Dublin protesting Israel's war in Gaza have built an encampment that forced the university to restrict campus access on Saturday and close the Book of Kells exhibition, one of Ireland's top tourist attractions.
The President His Highness Sheikh Mohamed bin Zayed Al Nahyan has received condolences from regional leaders on the death of his uncle, Sheikh Tahnoun bin Mohammed Al Nahyan.