There is no accurate AI tool to detect AI-generated news/stories. ChatGPT has withdrawn its tool because of its inaccuracies. A few hints using YOUR experiences: 1) Decide whether an email sender is known or expected. 2) Decide whether the sources cited are given are known or expected. 3) Decide whether the title seems particularly dramatic or emotional.
This article recommends two websites for help, The Factual and Grover.
Just for fun, you might join the daily Slueth game that provides titles and the player detects those that are not AI-generated.
Tangential FYI: How can you detect AI-generated misinformation?