Ukrainian President Volodymyr Zelenskyy is telling world leaders that the world is in “the most destructive arms race in human history." He called on the international community to act against Russia now, asserting that Vladimir Putin wants to expand his war in Europe. Zelenskyy’s comments came a day after he met with President Donald Trump, who expressed support for Ukraine’s efforts and criticized Russia. Trump said Tuesday that he believed Ukraine could win back all territory lost to Russia, a dramatic shift from the U.S. leader’s repeated calls for Kyiv to make concessions to end the war. Zelenskyy said international institutions like the U.N. are weak and today “Weapons decide who survives.”

OpenAI CEO Sam Altman has announced that the Stargate AI data center in Texas will be joined by five more across the U.S. This expansion is part of a $500 billion infrastructure investment promoted by President Donald Trump. Stargate, a joint venture with Oracle and Softbank, is building additional centers in Texas, New Mexico, Ohio, and an undisclosed Midwest location. The Abilene, Texas project is set to be the largest, transforming the city. Concerns about environmental impact and local resources have been raised, but developers emphasize efforts to minimize effects. The project has significantly boosted the local economy.

Nvidia has announced a new partnership with Intel to work on custom data centers and personal computer products. Nvidia is also investing $5 billion in Intel's common stock. The deal unveiled Thursday is subject to regulatory approvals. The deal comes a month after the U.S. government took a 10% stake in Intel. This agreement provides a lifeline for Intel, which has struggled after missing the shift to mobile computing. Intel has fallen behind amid the artificial intelligence boom that has propelled Nvidia into becoming the world's most valuable company.

High school and college educators say that student use of artificial intelligence has become so widespread that they need to rethink how to assign and assess students. Many teachers have shifted all writing to the classroom. Some are returning to pen and paper exams to avoid cheating. As the new school year gets underway, educators say it's clear that AI is transforming how students learn and study and how teachers teach. But it is also creating new confusion over what constitutes cheating. Students say they often turn to AI with good intentions for things like brainstorming or editing help but sometimes it's hard to know where to draw the line.

The battle among billionaires for bragging rights as the world’s richest person got heated Wednesday with the surprising surge of an old contender: Larry Ellison. In a stunning few minutes of trading early in the day, stock in Oracle, the software giant that the college dropout co-founded, rocketed more than a third, enough to temporarily wrest the title from its longtime holder Elon Musk. But the stock market is fickle, and by the end of the day Musk was back on top, at least according to wealth tracker Bloomberg, as Oracle gave a bit of its gains. Musk is now worth $384.2 billion versus $383.2 billion for Ellison.

Tesla is asking its investors to approve a proposed compensation package for CEO Elon Musk that could be worth almost $1 trillion and is based on the electric vehicle maker hitting certain ambitious milestones over the next decade. The company, which is also leaning heavily into robotics and AI, said in a regulatory filing on Friday that the package includes a dozen share tranches that will be given to Musk if it hits certain targets over the 10-year period. To achieve the initial amount in the compensation plan, Tesla would need to hit a market cap of $2 trillion, double its current valuation.

The attorneys general of California and Delaware have expressed serious concerns about the safety of OpenAI's chatbot, ChatGPT, especially for children and teens. They sent a letter to OpenAI after a meeting with its legal team earlier this week. The officials have been reviewing OpenAI's plans to restructure its business, focusing on safety oversight. They say they are alarmed by reports of dangerous interactions between chatbots and users, including a suicide and a murder-suicide linked to OpenAI's chatbot. The two officials have oversight over OpenAI's plans to restructure its nonprofit origins, but want better safety measures.