Iran’s new president reappoints UN-sanctioned official as head of the country's nuclear agency
Mars and Jupiter get chummy in the night sky. The planets won't get this close again until 2033
Russia blocks Signal messaging app as authorities tighten control over information
California partners with Nvidia to bring artificial intelligence resources to colleges
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World Federation of Advertisers discontinues small brand safety initiative after Elon Musk's X sues
Japan's Kishida cancels Asia trip after scientists urge preparations for a possible 'megaquake'
You had a lot of questions about next-generation nuclear reactors. We posed them to the experts
