Nikki Haley has adopted Trump's hard line against U.N. participation but stopped short of calling for total withdrawal.
The U.N. agency's first global guidance urges governments to quickly regulate generative AI in education and research.
The 1,157 protected sites account for less than 1% of Earth's surface but play vital roles as biodiversity hotspots.
The U.K.'s push at the U.N. Security Council could serve as a starting point for a multilateral approach toward addressing the serious security risks posed by artificial intelligence.
Nine social robots, flanked by their creators, offered mixed responses to reporters' questions about their future role in society and how strictly they should be regulated.
The United States signaled its intent to return to UNESCO and pay arrears after China became its biggest contributor and a Chinese diplomat took over as deputy chief.
The summit ended with support for creating a "zero draft" treaty ahead of the next negotiations at Nairobi in November.
About 69% of all the plastics produced, mainly through fossil fuel burning, are used just once or twice before they are thrown away. About 22% is mismanaged. Just 9% is recycled.
The estimated annual social and environmental costs of plastic pollution range from US$300 billion to $US1.5 trillion.
There's a growing industry and more tools for producing and distributing disinformation. Meanwhile, authorities are getting more aggressive and hostile toward journalists.
The listing means 194 nations that are party to the 1975 World Heritage Convention must commit to not deliberately cause direct or indirect damage to Odesa, and to help protect it.
FIFA president Gianni Infantino said Pelé was unique in so many ways: the only player to have won the FIFA World Cup three times; an athlete with incomparable skills and imagination; and the ability to rise above racism and poverty.
Indigenous communities have long coped with uncertainties of a changing climate. Researchers suggest tapping that knowledge to help save the planet.
The IPBES guidelines could prod decision-making beyond just politics and economics to deal with our massive loss of species and rising temperatures.