Elon Musk has urged major AI research groups and Chinese companies to run checks on other labs' systems. He issued the request while some people in the technology industry want a slowdown in AI work. Musk himself has put large sums into AI companies. Tesla stock slid after his remarks. Musk also was listed at the top of Forbes' yearly list of the wealthiest Americans. He repeated his proposal to merge Tesla and SpaceX. On another front, reports say child sexual abuse material remains on X, even though Musk committed to fixing it.