Good morning. It's the first day of fall. President Trump's expulsion of CNN, MS NOW and Politico from the White House sparked a dust-up in Washington, prompting news organizations to sue on First Amendment grounds and major TV networks to suspend pool coverage in protest.

Artificial intelligence dominated the United Nations General Assembly yesterday and will be central when President Trump and President Xi Jinping of China meet in Washington this week. Trump has called AI safety concerns a "hoax," while his administration accuses Chinese AI firms of stealing American intellectual property. Xi wants the U.S. to lift restrictions on advanced computer chips needed for China's AI models.

Researchers debate whether AI poses a greater existential risk than climate change. "In terms of things that could be the end of humanity, I think AI is a bigger risk," one told colleague Chico Harlan. However, AI risks remain speculative, while climate change science is "long-established and irrefutable." AI data centers surged 50 percent in electricity consumption last year, and a U.N. think tank predicts they will use nearly three times the electricity of Nigeria, Pakistan and Bangladesh combined by 2030.

Potential 2028 presidential candidates are already jockeying on AI policy, with Democrats favoring safeguards and Republicans rallying behind Trump's pace-of-development warnings. Microsoft executive Mustafa Suleyman argued current AI systems "are sequence completion engines, internally hollow" and must remain so for humanity to flourish.